Where to Wanguo watch maintenance service center
Publish: 2021-03-28 09:43:37
1. The main reasons are as follows:
1. Lack of kinetic energy: insufficient top chord and kinetic energy. In particular, the automatic mechanical watch requires a large amount of arm activity, and the efficiency of chain up is very low. If you usually exercise a small amount, you can wind it manually, which can ensure enough kinetic energy
2. Gear failure: gear train failure such as eccentric wheel and center wheel failure will cause watch to stop stealthily. These cases are often not easy to find, need to be disassembled, careful inspection and testing in order to find out the problem and solve the problem
3. Lack of maintenance: the mechanical watch should be maintained every 2-3 years or so. If it is not maintained for a long time, a lot of sludge will be proced inside. The friction between gears will increase, leading to the occurrence of sliding teeth.
1. Lack of kinetic energy: insufficient top chord and kinetic energy. In particular, the automatic mechanical watch requires a large amount of arm activity, and the efficiency of chain up is very low. If you usually exercise a small amount, you can wind it manually, which can ensure enough kinetic energy
2. Gear failure: gear train failure such as eccentric wheel and center wheel failure will cause watch to stop stealthily. These cases are often not easy to find, need to be disassembled, careful inspection and testing in order to find out the problem and solve the problem
3. Lack of maintenance: the mechanical watch should be maintained every 2-3 years or so. If it is not maintained for a long time, a lot of sludge will be proced inside. The friction between gears will increase, leading to the occurrence of sliding teeth.
2. Hello, it is suggested that you can open the warranty sheet attached to the meter. Normally, there will be a service address on the warranty sheet, or you can find the address of a regular watch Service Center for inspection and maintenance, or you can find a professional after-sales service center nearby.
3. Wanguo's watches are different from other brands in style. Their style should be strong and masculine, and their movement quality is also very good
if your watch has not yet passed the warranty period, it is recommended that you take it to a special after-sales service center or exclusive store for warranty, which can be found in almost every provincial capital city and some other well-developed cities in China. If your watch has passed the warranty period, you can also choose some regular professional watch repair shop to repair it
you can get Guangcheng watch line. There are professional technicians and advanced maintenance instruments to protect your watch
what to do if there is water in the watch:
first, if the water is not serious, but there is a layer of fog in the watch glass, then you can wrap the watch tightly with several layers of toilet paper or absorbent flannelette, and bake it at 15cm away from the 40W light bulb for about 30 minutes to eliminate the moisture
do not bake the cover close to the fire, so as not to deform the cover when heated. It can also be worn on the wrist with the watch cover facing inside and the bottom shell facing out, and the moisture can be eliminated after two hours. If the water is serious, it's better to send it to the meter shop to wipe oil immediately to remove the moisture of the movement, so as to avoid parts rusting
2. Put the watch inside and the bottom shell out on the wrist, and the moisture can be eliminated after two hours. If the water is serious, it's better to send it to the meter shop to wipe oil immediately to remove the moisture of the movement, so as to avoid parts rusting
3. Put the watch with granular silica gel into a closed container with water accumulated. After a few hours, take out the watch and the water will disappear. This method is simple and economical, without any damage to the accuracy and life of the meter. The silica gel that has absorbed water for many times can be dried at 120 ℃ for several hours. The water absorption capacity is renewable and can be used repeatedly
4. Put it in a rice VAT and bury it deep in the dry rice for a period of time. If it's fast, you can see the obvious effect in one night
5. Before going to bed at night, put your watch on the TV, table or other places in the room. However, do not leave it in a well ventilated room (it is better not to open windows), because the humidity of the room is relatively low at night, and it is easy to evaporate the water< 6. It is better to seal the watch with granular dry material and take out the watch after a few hours to remove the water in the watch
7. To wear it in reverse is to put the words on the skin.
if your watch has not yet passed the warranty period, it is recommended that you take it to a special after-sales service center or exclusive store for warranty, which can be found in almost every provincial capital city and some other well-developed cities in China. If your watch has passed the warranty period, you can also choose some regular professional watch repair shop to repair it
you can get Guangcheng watch line. There are professional technicians and advanced maintenance instruments to protect your watch
what to do if there is water in the watch:
first, if the water is not serious, but there is a layer of fog in the watch glass, then you can wrap the watch tightly with several layers of toilet paper or absorbent flannelette, and bake it at 15cm away from the 40W light bulb for about 30 minutes to eliminate the moisture
do not bake the cover close to the fire, so as not to deform the cover when heated. It can also be worn on the wrist with the watch cover facing inside and the bottom shell facing out, and the moisture can be eliminated after two hours. If the water is serious, it's better to send it to the meter shop to wipe oil immediately to remove the moisture of the movement, so as to avoid parts rusting
2. Put the watch inside and the bottom shell out on the wrist, and the moisture can be eliminated after two hours. If the water is serious, it's better to send it to the meter shop to wipe oil immediately to remove the moisture of the movement, so as to avoid parts rusting
3. Put the watch with granular silica gel into a closed container with water accumulated. After a few hours, take out the watch and the water will disappear. This method is simple and economical, without any damage to the accuracy and life of the meter. The silica gel that has absorbed water for many times can be dried at 120 ℃ for several hours. The water absorption capacity is renewable and can be used repeatedly
4. Put it in a rice VAT and bury it deep in the dry rice for a period of time. If it's fast, you can see the obvious effect in one night
5. Before going to bed at night, put your watch on the TV, table or other places in the room. However, do not leave it in a well ventilated room (it is better not to open windows), because the humidity of the room is relatively low at night, and it is easy to evaporate the water< 6. It is better to seal the watch with granular dry material and take out the watch after a few hours to remove the water in the watch
7. To wear it in reverse is to put the words on the skin.
4. Now it's 0.0650 yuan
5.
In 1875, the silver coin of Meiji, Japan, is 38.62mm in diameter, 2.63mm in thickness and 27.0g in weight
in Japanese silver coins, the front pattern is Chinese character & quot; A circle;, The upper part is the sun pattern, surrounded by cherry blossom branches and leaves, and the lower part is a concentric knot made of silk ribbon with & quot; Trade Bank & quot; Three words
on the back, there is a pattern of flying dragon playing with beads surrounded by beads, with beads on the outer ring of the dragon and & quot; Great Japan, the eighth year of Meiji & quot; And & quot; 420·ONE YEN·900" word. Japan's trading silver has been continuously cast for only three years, with a circulation of about 97575 pieces
Meiji identification of forgery in Japan (Japanese Longyin identification)
Meiji Longyin, also known as Meiji Longyang, is made of 90% pure silver and 10% copper alloy. It is exquisitely made, with distinct workmanship. It has been handed down from generation to generation, and there are many imitations. The following are several methods of Japanese Longyang identification of forgery (Japanese Longyin identification):
1, Most of the imitations are silver plated with iron, that is, iron absorption stone. It's really silver. It won't hold. It's fake iron. It won't stick
If you touch it with your hand, you will feel that it is really layered (carved dragon scales). If you touch it with your hand, it is slippery3, listen to the sound, really knock out when the sound, a little echo. The fake sound is Ding. It's very light and crisp. This is the basic difference between silver and iron
4, work difference and weight are also good methods. For example, there are 3.685.049 one yuan silver coins issued in the third year of Meiji, weight: 26.96 g, diameter: 38.58 mm (composition: 90% silver, 10% copper), no mistake, fake is slightly lighter
5. Workmanship and mould are really called "famous metalworking" in history. It can be seen that the precision of the carver emphasizes the details of the mold. Three thorn dragon, light carving, then Tung leaf. False in the subtle, mostly fuzzy processing. The easiest place to see is the "gear" of the outer ring. Really clear, false fuzzy, and short, even missing
The color of Baoguang can be judged by the luster of silver coins. For hundreds of years in the history of real Longyang, Baoguang presents a charming purple gray oxidation phenomenon, which is of course very different from the fake7. The year of issue, Japan began to officially proce Longyang only in the third year of Meiji, so the wrong year must be false, and shangyin is also a round Longyang, which is only issued in the eighth, ninth and tenth year of Meiji. A total of 3.056.638 pieces were issued
extended data:
Japan Meiji eight years "1875" one yuan silver coin diameter 38.62mm, thickness 2.63mm, weight 27.0g. In the silver coin of Japan, the famous proct has the Chinese character "a circle" on the front, the sun pattern on the top, cherry blossom branches and leaves around, concentric knot made of silk ribbon on the bottom, and three words of "trade silver" in the middle
on the back, there is a pattern of flying dragon playing with pearls surrounded by beads, and there are the words "Meiji 8th year of Greater Japan" and "420 · one yen · 900" on the outside. Japan's trading silver has been continuously cast for only three years, with a circulation of about 97575 pieces
Since the third year of Meiji, in order to meet the needs of vigorously developing capitalism and developing foreign economy and commodity trade, the Japanese reform government began to cast "one yuan" trade silver dollar, which lasted for 45 years until the third year of Taisho (1914). The total number of trade silver dollar was about 200 million. There were three formats of Japanese trade silver dollar, but the silver dollar from the third year of Meiji to the third year of Meiji was the best, 3% - 98%therefore, the price of coins in this period is now the highest, generally hundreds of thousands to millions. Coins in other periods have been issued in large quantities, and the quality has not met the previous requirements. At that time, the most frequently cast format was the trade silver coin in the seventh year of Meiji, at least in the third, fourth, eighth and eleventh years of Meiji
In the first year of Meiji, Japan purchased a complete set of coining machines from Hong Kong (British machines, which had been used to cast Hong Kong's first currency in 1866-1868), and established a national mint in Osaka. In the third year of Meiji, when the Mint was completed, silver coins were immediately cast. The value of silver coins can be divided into five kinds: 5 coins, 10 coins, 20 coins, 50 coins and 1 yuan. The "Yuan" was defined as the standard currency of Japan, that is, the silver standard system was implemented Then, in the eighth year of Meiji, Japan made trade silver again. Compared with the old version, this kind of trade silver had the same quality and increased weight. As a result, it was melted and cast by the folk collection, and Japan lost for a while6. Shanghai Wanguo maintenance center is equipped with professional personnel to answer information, answer phone calls, understand customer needs and answer questions, and implement on-site maintenance and instant convenience services. At the same time, it provides customers with original parts maintenance to ensure the quality of maintenance services. Service items: maintenance services, maintenance services, customized services, testing services, polishing and refurbishment, replacement of parts Diamond engraving, factory service, free degaussing, free cleaning appearance, etc.
7. As "yuan Datou" is graally recognized by the collection market, many counterfeiters forge or imitate "yuan Datou" in pursuit of interests, and many collectors become "yuan Datou" carelessly for the sake of "yuan Datou". Yao shuomin, former deputy curator of China Numismatic Museum and Deputy Secretary General of China Numismatic Society, provided us with some skills to identify the authenticity of "yuan Datou":
the first method is to "knock", take two pieces of silver coins, hold the center of one silver coin with the fingertips of both hands, and slowly draw close to each other. When the two silver coins overlap about a quarter of the position, the first method is to "knock", It makes two silver coins gently knock on each other's edge. The sound of the real coin is clear, and the sound of the fake coin sounds wooden
the second method is to "blow". Hold the center of the silver dollar gently with your index finger and thumb, blow the vertical edge of the silver dollar, and quickly put it to your ear to listen. The tail sound of the silver coin with good quality is long and clear, while other metal or non pure silver coins will not have such a tail sound. For example, the silver coin with lead in the market is almost silent, because the lead is heavier and softer, It's not easy to shake the pronunciation. Nowadays, most forgers use computer plate making and use alloy materials to pass off silver. The color and text of the forger can be confused with the real. But in the end, because it is not silver, its pronunciation is sharp and long, and experts can tell the truth as soon as they distinguish it
the third method is "weighing". The real coin is generally full weight, and its circulation loss is about 26G. Its color is soft and white, its tone is soft and long, its text and picture are accurate, and its pulp is natural; Counterfeit coins are generally not heavy enough, or overweight e to thickening, and the color is gray
Wang Jianzhong, a collector who is keen on collecting silver coins, also told reporters that his good way to identify the authenticity of silver coins is to wipe the silver coins on a touchstone several times until there are silver scratches, and then drop hydrochloric acid and nitric acid on the scratches. At this time, if it is a real coin, the mixed liquid on the scratch is milky white, and the counterfeit coin is colorless and transparent. If the silver content of silver coin is not enough, the mixed liquid of hydrochloric acid and nitric acid also appears milky white, but not rich enough. The less the silver content, the lower the richness.
Yinyuan, also known as "Yinyuan", was originally imported from abroad, and is generally welcomed because of its uniform shape and convenient use. At the beginning of the 18th century, the folk began to imitate, and when the local government saw that it was profitable, it took part in the unified official casting. In 1910, the Qing government issued the monetary system regulations, established the silver yuan as the national currency, stopped the free casting in various places, and took the right of coinage back to the central government. The next year, the "Qing silver coin" was coined, which created the currency circulation system with silver yuan as the unit in modern China. Silver yuan is favored by the public and collectors for its beautiful casting form and unique precious metal currency form. However, the current market is full of counterfeits, which are mainly manifested in two categories: one is the so-called "mechanism version fine imitation silver coin" with low or even zero silver content, and the other is the so-called "pure silver high imitation silver coin" with high silver content. With the continuous improvement of casting methods and the application of computer scanning technology, some of them have reached the point of confusing the true with the false. In the collection practice, the author learns from other people's experience and his own lessons, and sums up several methods to distinguish the false, which can be taught by the same good and expert< First, listening quality. The sound of the silver yuan, which contains about 90% silver, is low, soft and melodious; Counterfeits are either crisp and harsh, or ll and ll. The common feature is the short aftertone. When striking and comparing, the less the contact surface between the two fingers, the better, to ensure the effect of natural vibration. It is said that in the old days, some bank owners were lying on their chairs with their eyes closed and asked the staff to bump the silver dollars one by one into the edge of the big water tank, listening to the sound to distinguish the true from the false< Weigh the weight, thickness and diameter. These two identification methods need the help of weighing tools such as balance, scale and vernier caliper. Silver in the long-term circulation will wear and tear consumption, generally speaking, can not reach the theoretical weight, but it is not "short weight", if the Kuping Qiqian two-part edition is less than 26 grams, there is doubt. The author once bought a pair of Guangxu Yuanbao and Xuantong Yuanbao made in Hubei Province, weighing 25 grams. The result of identification confirmed that the question was correct. The standard flat code of silver coin is: Ku Ping 1 / 2 = 37.31g, Ku Ping 7 / 2 = 26.81g, Ku Ping 3 / 6 = 13.41g, Ku Ping 1 / 4 = 5.37g, Ku Ping 7 / 2 = 2.69g, Ku Ping 3 / 6 = 1.34g. The weight, thickness and diameter of silver dollar are allowed to have errors, but if there are two extremes, nine out of ten there are problems< 3. Check the edge teeth. The side teeth of the silver coin mechanism are fine, symmetrical and regular. The side teeth of the counterfeit coin are rough and uneven, and some of them have traces of local filing. As long as careful, the naked eye is still relatively easy to distinguish. Some foreign silver coins circulated in the early stage of our country, such as "Hercules of France", whose side teeth are the foreign letters with equal spacing, so we should be familiar with and master the shape of side teeth of various currencies< 4. Look at the color. Silver and non silver metals can be distinguished from each other by their surface colors. Silver has a natural and pleasant luster, which is difficult to be achieved by cheap metals. The so-called "coated slurry" of fresh water ink color will be formed on the surface of silver coins that have been stored for a long time, but it is not as heavy as ancient coins. Once wiped, it will be as old as new. The chemical molecular structure of silver is very stable and will not change color. In addition, the fake silver plating can also be identified by wiping, and the camouflage coat can be stripped by repeatedly wiping with sand rubber< 5. Coin viewing. In the sun or light, the silver coin face and the eye, observe the bottom of the coin face is uneven phenomenon. The foundry equipment used by counterfeiters is difficult to make the bottom layer of the coin as flat as a mirror. Special attention should be paid to the connection between the text pattern and the bottom layer of the coin< 6. Check the wear. After a long time of circulation, silver will always have different degrees of wear and scratch marks. The natural procers have no rules to follow. The worn-out counterfeits show the regular wear surface and scratch marks of artificial behavior and machine behavior. Some people say that the best way to make old coins is to make old coins on molds, that is, to make worn surfaces, scratches and potholes on molds. The way to deal with it is to hold a number of silver coins of the same kind and examine them one by one under a low-power magnifying glass, and "Li Gui" will show its true shape< 7. To the atlas. Keep several kinds of well printed silver dollar catalogues on hand as far as possible, and carefully compare the real objects with them. Look at the frame position of the text pattern in the large part, the stroke processing of the text and the details of the pattern in the small part, and look for the flaws
all collectors of silver coins have their own identification methods, and they have something in common
nowadays, collecting all kinds of coins and antiques has become a trend. As far as the silver coins of the Qing Dynasty and the Republic of China are concerned, there are treasures ranging from several hundred thousand yuan to several yuan worth of silver coins. There are all kinds of counterfeit coins, and the materials used are also different, which makes people unable to guard against them. The following is a list of the differences between real silver coins and several kinds of fake silver coins for reference
the real silver coin is transparent in white, soft and malleable, with clear and pleasant sound when struck, smooth layout, symmetrical edges, natural and generous pictures and pictures, and traces of circulation wear. The silver coins stored at home are hard and fine in ancient black, and those buried underground will have some irregular hard green rust. Fake black and green rust will fade away when they are soaked in boiling water, which is easy to distinguish
at the end of 1970s, the Mn Ni alloy counterfeit silver coins cast in Guangdong, Guangdong, Fujian and Hunan mountainous areas were almost all over the country. The coins were rough in workmanship, with many sand holes, containing particles, uneven thickness, light in weight, and easy to turn black for a long time. However, they could not be painted black on the lime wall, so they were the only counterfeit silver coins that would be broken. By the early 1980s, the technology of copper nickel alloy cadmium plating counterfeit coins had made some progress. There were two kinds of counterfeit coins: the picture and text were fuzzy and the three-dimensional sense was too strong. The edge teeth were basically symmetrical but unnatural, there were traces of files, there was no wear and old color coating, the sound was sharp, and the light yellow appeared after the surface was electroplated and ground off, But there are still some county stalls selling them as real silver coins
the third kind of counterfeit silver coin appeared 10 years ago. It is made of nickel zinc alloy. Its color is black and bright, and it emits lead black light. It can draw black lines repeatedly on the lime wall, and its sound is also sharp and high. It is slightly more ll than that of copper nickel alloy. Its workmanship is more realistic on one side. Although the edge of the teeth is symmetrical, it is relatively stiff. The naked eye can also see some sand holes, spots and traces of file processing, At present, this coin can still be seen in the provincial capital coin stand<
recently, there is another well-made counterfeit nickel cadmium vanadium alloy coin on the market, which has smooth layout, a little white color, a little luster, sharp sound, hard quality, a little light, too strong three-dimensional sense, less verve and file marks
the counterfeit coins pressed with real silver are the most difficult to identify. They are proced in Guangdong and Hunan in recent years. The silver quality is excellent, the color is white, and the weight is basically the same, about 26-27g. Due to insufficient pressure, the side teeth are fuzzy, the side teeth are even but unnatural, and the pictures and texts are relatively clear, but there are also some sand holes. When viewed with a magnifying glass, the patterns and characters are realistic, But the blank space layout is not very smooth, no traces of natural circulation wear and ancient color coating
another kind of common silver coin that changes and adds characters often makes some veteran forget themselves for a while, that is, common Yuan Xiang coin plus English signature version; Add "Gansu" and "Soviet" in daruijin; Sun Xiang's founding commemorative coins, such as six pointed star changed to five pointed star, English and digital misprint coins, etc. As a matter of fact, there are graphic differences between the above two editions of silver coins. The restructuring method is to first remove the surplus, then weld on some silver, and then engrave. The handwriting is a little less verve, with knife marks, and will damage the surrounding layout. After washing, it is easy to find the flaws of knife marks by painting watercolor green
there are three kinds of counterfeit coins in the Qing Dynasty and the Republic of China: first, some commemorative coins, such as Cixi, were coined out of thin air by silversmiths. The second is the counterfeit coins made later by coin workers in the late Qing Dynasty, in which a few of the coins cast in the original mould still have some value. As for the re carved and pressed coins, although they are all made of pure silver, the situation is different. After a long period of circulation, this coin has wear marks and old color paste. It can't be identified from the material and old and new aspects, so it's easy to muddle through. We can only work hard from the design and text. The third is the common silver plated copper coins in the Republic of China. In the movies, it is common for businessmen to hold silver coins with their fingertips and blow them at their mouths, that is, to listen to the sound in their ears to distinguish the true from the false. Now a thin layer of silver plating has faded, revealing the basic excellent brass and copper coins, which are bumped and worn seriously, It is often mistaken for one of the few samples of silver mold copper coins<
the main features of several common counterfeit silver coins are introced as follows:
copperplate silver coins: its shape, size and pattern are completely similar to real silver coins, but it is mainly made of copper with rough pattern. When it is ground on a stone, the essence of copper appears, and the sound of knocking is sharp and bright with whistle
silver coin with lead: silver coin with lead inside and silver outside. Its pattern is the same as the normal silver dollar, but the sound is thick, ll, gloomy and with a click sound. When it is roasted by fire, lead will flow out< br />
the first method is to "knock", take two pieces of silver coins, hold the center of one silver coin with the fingertips of both hands, and slowly draw close to each other. When the two silver coins overlap about a quarter of the position, the first method is to "knock", It makes two silver coins gently knock on each other's edge. The sound of the real coin is clear, and the sound of the fake coin sounds wooden
the second method is to "blow". Hold the center of the silver dollar gently with your index finger and thumb, blow the vertical edge of the silver dollar, and quickly put it to your ear to listen. The tail sound of the silver coin with good quality is long and clear, while other metal or non pure silver coins will not have such a tail sound. For example, the silver coin with lead in the market is almost silent, because the lead is heavier and softer, It's not easy to shake the pronunciation. Nowadays, most forgers use computer plate making and use alloy materials to pass off silver. The color and text of the forger can be confused with the real. But in the end, because it is not silver, its pronunciation is sharp and long, and experts can tell the truth as soon as they distinguish it
the third method is "weighing". The real coin is generally full weight, and its circulation loss is about 26G. Its color is soft and white, its tone is soft and long, its text and picture are accurate, and its pulp is natural; Counterfeit coins are generally not heavy enough, or overweight e to thickening, and the color is gray
Wang Jianzhong, a collector who is keen on collecting silver coins, also told reporters that his good way to identify the authenticity of silver coins is to wipe the silver coins on a touchstone several times until there are silver scratches, and then drop hydrochloric acid and nitric acid on the scratches. At this time, if it is a real coin, the mixed liquid on the scratch is milky white, and the counterfeit coin is colorless and transparent. If the silver content of silver coin is not enough, the mixed liquid of hydrochloric acid and nitric acid also appears milky white, but not rich enough. The less the silver content, the lower the richness.
Yinyuan, also known as "Yinyuan", was originally imported from abroad, and is generally welcomed because of its uniform shape and convenient use. At the beginning of the 18th century, the folk began to imitate, and when the local government saw that it was profitable, it took part in the unified official casting. In 1910, the Qing government issued the monetary system regulations, established the silver yuan as the national currency, stopped the free casting in various places, and took the right of coinage back to the central government. The next year, the "Qing silver coin" was coined, which created the currency circulation system with silver yuan as the unit in modern China. Silver yuan is favored by the public and collectors for its beautiful casting form and unique precious metal currency form. However, the current market is full of counterfeits, which are mainly manifested in two categories: one is the so-called "mechanism version fine imitation silver coin" with low or even zero silver content, and the other is the so-called "pure silver high imitation silver coin" with high silver content. With the continuous improvement of casting methods and the application of computer scanning technology, some of them have reached the point of confusing the true with the false. In the collection practice, the author learns from other people's experience and his own lessons, and sums up several methods to distinguish the false, which can be taught by the same good and expert< First, listening quality. The sound of the silver yuan, which contains about 90% silver, is low, soft and melodious; Counterfeits are either crisp and harsh, or ll and ll. The common feature is the short aftertone. When striking and comparing, the less the contact surface between the two fingers, the better, to ensure the effect of natural vibration. It is said that in the old days, some bank owners were lying on their chairs with their eyes closed and asked the staff to bump the silver dollars one by one into the edge of the big water tank, listening to the sound to distinguish the true from the false< Weigh the weight, thickness and diameter. These two identification methods need the help of weighing tools such as balance, scale and vernier caliper. Silver in the long-term circulation will wear and tear consumption, generally speaking, can not reach the theoretical weight, but it is not "short weight", if the Kuping Qiqian two-part edition is less than 26 grams, there is doubt. The author once bought a pair of Guangxu Yuanbao and Xuantong Yuanbao made in Hubei Province, weighing 25 grams. The result of identification confirmed that the question was correct. The standard flat code of silver coin is: Ku Ping 1 / 2 = 37.31g, Ku Ping 7 / 2 = 26.81g, Ku Ping 3 / 6 = 13.41g, Ku Ping 1 / 4 = 5.37g, Ku Ping 7 / 2 = 2.69g, Ku Ping 3 / 6 = 1.34g. The weight, thickness and diameter of silver dollar are allowed to have errors, but if there are two extremes, nine out of ten there are problems< 3. Check the edge teeth. The side teeth of the silver coin mechanism are fine, symmetrical and regular. The side teeth of the counterfeit coin are rough and uneven, and some of them have traces of local filing. As long as careful, the naked eye is still relatively easy to distinguish. Some foreign silver coins circulated in the early stage of our country, such as "Hercules of France", whose side teeth are the foreign letters with equal spacing, so we should be familiar with and master the shape of side teeth of various currencies< 4. Look at the color. Silver and non silver metals can be distinguished from each other by their surface colors. Silver has a natural and pleasant luster, which is difficult to be achieved by cheap metals. The so-called "coated slurry" of fresh water ink color will be formed on the surface of silver coins that have been stored for a long time, but it is not as heavy as ancient coins. Once wiped, it will be as old as new. The chemical molecular structure of silver is very stable and will not change color. In addition, the fake silver plating can also be identified by wiping, and the camouflage coat can be stripped by repeatedly wiping with sand rubber< 5. Coin viewing. In the sun or light, the silver coin face and the eye, observe the bottom of the coin face is uneven phenomenon. The foundry equipment used by counterfeiters is difficult to make the bottom layer of the coin as flat as a mirror. Special attention should be paid to the connection between the text pattern and the bottom layer of the coin< 6. Check the wear. After a long time of circulation, silver will always have different degrees of wear and scratch marks. The natural procers have no rules to follow. The worn-out counterfeits show the regular wear surface and scratch marks of artificial behavior and machine behavior. Some people say that the best way to make old coins is to make old coins on molds, that is, to make worn surfaces, scratches and potholes on molds. The way to deal with it is to hold a number of silver coins of the same kind and examine them one by one under a low-power magnifying glass, and "Li Gui" will show its true shape< 7. To the atlas. Keep several kinds of well printed silver dollar catalogues on hand as far as possible, and carefully compare the real objects with them. Look at the frame position of the text pattern in the large part, the stroke processing of the text and the details of the pattern in the small part, and look for the flaws
all collectors of silver coins have their own identification methods, and they have something in common
nowadays, collecting all kinds of coins and antiques has become a trend. As far as the silver coins of the Qing Dynasty and the Republic of China are concerned, there are treasures ranging from several hundred thousand yuan to several yuan worth of silver coins. There are all kinds of counterfeit coins, and the materials used are also different, which makes people unable to guard against them. The following is a list of the differences between real silver coins and several kinds of fake silver coins for reference
the real silver coin is transparent in white, soft and malleable, with clear and pleasant sound when struck, smooth layout, symmetrical edges, natural and generous pictures and pictures, and traces of circulation wear. The silver coins stored at home are hard and fine in ancient black, and those buried underground will have some irregular hard green rust. Fake black and green rust will fade away when they are soaked in boiling water, which is easy to distinguish
at the end of 1970s, the Mn Ni alloy counterfeit silver coins cast in Guangdong, Guangdong, Fujian and Hunan mountainous areas were almost all over the country. The coins were rough in workmanship, with many sand holes, containing particles, uneven thickness, light in weight, and easy to turn black for a long time. However, they could not be painted black on the lime wall, so they were the only counterfeit silver coins that would be broken. By the early 1980s, the technology of copper nickel alloy cadmium plating counterfeit coins had made some progress. There were two kinds of counterfeit coins: the picture and text were fuzzy and the three-dimensional sense was too strong. The edge teeth were basically symmetrical but unnatural, there were traces of files, there was no wear and old color coating, the sound was sharp, and the light yellow appeared after the surface was electroplated and ground off, But there are still some county stalls selling them as real silver coins
the third kind of counterfeit silver coin appeared 10 years ago. It is made of nickel zinc alloy. Its color is black and bright, and it emits lead black light. It can draw black lines repeatedly on the lime wall, and its sound is also sharp and high. It is slightly more ll than that of copper nickel alloy. Its workmanship is more realistic on one side. Although the edge of the teeth is symmetrical, it is relatively stiff. The naked eye can also see some sand holes, spots and traces of file processing, At present, this coin can still be seen in the provincial capital coin stand<
recently, there is another well-made counterfeit nickel cadmium vanadium alloy coin on the market, which has smooth layout, a little white color, a little luster, sharp sound, hard quality, a little light, too strong three-dimensional sense, less verve and file marks
the counterfeit coins pressed with real silver are the most difficult to identify. They are proced in Guangdong and Hunan in recent years. The silver quality is excellent, the color is white, and the weight is basically the same, about 26-27g. Due to insufficient pressure, the side teeth are fuzzy, the side teeth are even but unnatural, and the pictures and texts are relatively clear, but there are also some sand holes. When viewed with a magnifying glass, the patterns and characters are realistic, But the blank space layout is not very smooth, no traces of natural circulation wear and ancient color coating
another kind of common silver coin that changes and adds characters often makes some veteran forget themselves for a while, that is, common Yuan Xiang coin plus English signature version; Add "Gansu" and "Soviet" in daruijin; Sun Xiang's founding commemorative coins, such as six pointed star changed to five pointed star, English and digital misprint coins, etc. As a matter of fact, there are graphic differences between the above two editions of silver coins. The restructuring method is to first remove the surplus, then weld on some silver, and then engrave. The handwriting is a little less verve, with knife marks, and will damage the surrounding layout. After washing, it is easy to find the flaws of knife marks by painting watercolor green
there are three kinds of counterfeit coins in the Qing Dynasty and the Republic of China: first, some commemorative coins, such as Cixi, were coined out of thin air by silversmiths. The second is the counterfeit coins made later by coin workers in the late Qing Dynasty, in which a few of the coins cast in the original mould still have some value. As for the re carved and pressed coins, although they are all made of pure silver, the situation is different. After a long period of circulation, this coin has wear marks and old color paste. It can't be identified from the material and old and new aspects, so it's easy to muddle through. We can only work hard from the design and text. The third is the common silver plated copper coins in the Republic of China. In the movies, it is common for businessmen to hold silver coins with their fingertips and blow them at their mouths, that is, to listen to the sound in their ears to distinguish the true from the false. Now a thin layer of silver plating has faded, revealing the basic excellent brass and copper coins, which are bumped and worn seriously, It is often mistaken for one of the few samples of silver mold copper coins<
the main features of several common counterfeit silver coins are introced as follows:
copperplate silver coins: its shape, size and pattern are completely similar to real silver coins, but it is mainly made of copper with rough pattern. When it is ground on a stone, the essence of copper appears, and the sound of knocking is sharp and bright with whistle
silver coin with lead: silver coin with lead inside and silver outside. Its pattern is the same as the normal silver dollar, but the sound is thick, ll, gloomy and with a click sound. When it is roasted by fire, lead will flow out< br />
8. As "yuan Datou" is graally recognized by the collection market, many counterfeiters forge or imitate "yuan Datou" in pursuit of interests, and many collectors become "yuan Datou" carelessly for the sake of "yuan Datou". Yao shuomin, former deputy curator of China Numismatic Museum and Deputy Secretary General of China Numismatic Society, provided us with some skills to identify the authenticity of "yuan Datou":
the first method is to "knock", take two pieces of silver coins, hold the center of one silver coin with the fingertips of both hands, and slowly draw close to each other. When the two silver coins overlap about a quarter of the position, the first method is to "knock", It makes two silver coins gently knock on each other's edge. The sound of the real coin is clear, and the sound of the fake coin sounds wooden
the second method is to "blow". Hold the center of the silver dollar gently with your index finger and thumb, blow the vertical edge of the silver dollar, and quickly put it to your ear to listen. The tail sound of the silver coin with good quality is long and clear, while other metal or non pure silver coins will not have such a tail sound. For example, the silver coin with lead in the market is almost silent, because the lead is heavier and softer, It's not easy to shake the pronunciation. Nowadays, most forgers use computer plate making and use alloy materials to pass off silver. The color and text of the forger can be confused with the real. But in the end, because it is not silver, its pronunciation is sharp and long, and experts can tell the truth as soon as they distinguish it
the third method is "weighing". The real coin is generally full weight, and its circulation loss is about 26G. Its color is soft and white, its tone is soft and long, its text and picture are accurate, and its pulp is natural; Counterfeit coins are generally not heavy enough, or overweight e to thickening, and the color is gray
Wang Jianzhong, a collector who is keen on collecting silver coins, also told reporters that his good way to identify the authenticity of silver coins is to wipe the silver coins on a touchstone several times until there are silver scratches, and then drop hydrochloric acid and nitric acid on the scratches. At this time, if it is a real coin, the mixed liquid on the scratch is milky white, and the counterfeit coin is colorless and transparent. If the silver content of silver coin is not enough, the mixed liquid of hydrochloric acid and nitric acid also appears milky white, but not rich enough. The less the silver content, the lower the richness.
Yinyuan, also known as "Yinyuan", was originally imported from abroad, and is generally welcomed because of its uniform shape and convenient use. At the beginning of the 18th century, the folk began to imitate, and the local government intervened in unifying the official casting when they saw that it was profitable. In the second year of Xuantong (1910), the Qing Dynasty issued the regulations of the cloth coin system, established the silver yuan as the national currency, stopped the free casting in various places, and took the right of coinage back to the central government. The next year, it began to cast the "Qing silver coin", which created the currency circulation system with the silver yuan as the unit in modern China. Silver yuan is favored by the public and collectors for its beautiful casting form and unique precious metal currency form. However, the current market is full of counterfeits, which are mainly manifested in two categories: one is the so-called "mechanism version fine imitation silver coin" with low or even zero silver content, and the other is the so-called "pure silver high imitation silver coin" with high silver content. With the continuous improvement of casting methods and the application of computer scanning technology, some of them have reached the point of confusing the true with the false. In the collection practice, the author learns from other people's experience and his own lessons, and sums up several methods to distinguish the false, which can be taught by the same good and expert< First, listening quality. The sound of the silver yuan, which contains about 90% silver, is low, soft and melodious; Counterfeits are either crisp and harsh, or ll and ll. The common feature is the short aftertone. When striking and comparing, the less the contact surface between the two fingers, the better, to ensure the effect of natural vibration. It is said that in the old days, some bank owners were lying on their chairs with their eyes closed and asked the staff to bump the silver dollars one by one into the edge of the big water tank, listening to the sound to distinguish the true from the false< Weigh the weight, thickness and diameter. These two identification methods need the help of weighing tools such as balance, scale and vernier caliper. Silver in the long-term circulation will wear and tear consumption, generally speaking, can not reach the theoretical weight, but it is not "short weight", if the Kuping Qiqian two-part edition is less than 26 grams, there is doubt. The author once bought a pair of Guangxu Yuanbao and Xuantong Yuanbao made in Hubei Province, weighing 25 grams. The result of identification confirmed that the question was correct. The standard flat code of silver coin is: Ku Ping 1 / 2 = 37.31g, Ku Ping 7 / 2 = 26.81g, Ku Ping 3 / 6 = 13.41g, Ku Ping 1 / 4 = 5.37g, Ku Ping 7 / 2 = 2.69g, Ku Ping 3 / 6 = 1.34g. The weight, thickness and diameter of silver dollar are allowed to have errors, but if there are two extremes, nine out of ten there are problems< 3. Check the edge teeth. The side teeth of the silver coin mechanism are fine, symmetrical and regular. The side teeth of the counterfeit coin are rough and uneven, and some of them have traces of local filing. As long as careful, the naked eye is still relatively easy to distinguish. Some foreign silver coins circulated in the early stage of our country, such as "Hercules of France", whose side teeth are the foreign letters with equal spacing, so we should be familiar with and master the shape of side teeth of various currencies< 4. Look at the color. Silver and non silver metals can be distinguished from each other by their surface colors. Silver has a natural and pleasant luster, which is difficult to be achieved by cheap metals. The so-called "coated slurry" of fresh water ink color will be formed on the surface of silver coins that have been stored for a long time, but it is not as heavy as ancient coins. Once wiped, it will be as old as new. The chemical molecular structure of silver is very stable and will not change color. In addition, the fake silver plating can also be identified by wiping, and the camouflage coat can be stripped by repeatedly wiping with sand rubber< 5. Coin viewing. In the sun or light, the silver coin face and the eye, observe the bottom of the coin face is uneven phenomenon. The foundry equipment used by counterfeiters is difficult to make the bottom layer of the coin as flat as a mirror. Special attention should be paid to the connection between the text pattern and the bottom layer of the coin< 6. Check the wear. After a long time of circulation, silver will always have different degrees of wear and scratch marks. The natural procers have no rules to follow. The worn-out counterfeits show the regular wear surface and scratch marks of artificial behavior and machine behavior. Some people say that the best way to make old coins is to make old coins on molds, that is, to make worn surfaces, scratches and potholes on molds. The way to deal with it is to hold a number of silver coins of the same kind and examine them one by one under a low-power magnifying glass, and "Li Gui" will show its true shape< 7. To the atlas. Keep several kinds of well printed silver dollar catalogues on hand as far as possible, and carefully compare the real objects with them. Look at the frame position of the text pattern in the large part, the stroke processing of the text and the details of the pattern in the small part, and look for the flaws
all collectors of silver coins have their own identification methods, and they have something in common
nowadays, collecting all kinds of coins and antiques has become a trend. As far as the silver coins of the Qing Dynasty and the Republic of China are concerned, there are treasures ranging from several hundred thousand yuan to several yuan worth of silver coins. There are all kinds of counterfeit coins, and the materials used are also different, which makes people unable to guard against them. The following is a list of the differences between real silver coins and several kinds of fake silver coins for reference
the real silver coin is transparent in white, soft and malleable, with clear and pleasant sound when struck, smooth layout, symmetrical edges, natural and generous pictures and pictures, and traces of circulation wear. The silver coins stored at home are hard and fine in ancient black, and those buried underground will have some irregular hard green rust. Fake black and green rust will fade away when they are soaked in boiling water, which is easy to distinguish
at the end of 1970s, the Mn Ni alloy counterfeit silver coins cast in Guangdong, Guangdong, Fujian and Hunan mountainous areas were almost all over the country. The coins were rough in workmanship, with many sand holes, containing particles, uneven thickness, light in weight, and easy to turn black for a long time. However, they could not be painted black on the lime wall, so they were the only counterfeit silver coins that would be broken. By the early 1980s, the technology of copper nickel alloy cadmium plating counterfeit coins had made some progress. There were two kinds of counterfeit coins: the picture and text were fuzzy and the three-dimensional sense was too strong. The edge teeth were basically symmetrical but unnatural, there were traces of files, there was no wear and old color coating, the sound was sharp, and the light yellow appeared after the surface was electroplated and ground off, But there are still some county stalls selling them as real silver coins
the third kind of counterfeit silver coin appeared 10 years ago. It is made of nickel zinc alloy. Its color is black and bright, and it emits lead black light. It can draw black lines repeatedly on the lime wall, and its sound is also sharp and high. It is slightly more ll than that of copper nickel alloy. Its workmanship is more realistic on one side. Although the edge of the teeth is symmetrical, it is relatively stiff. The naked eye can also see some sand holes, spots and traces of file processing, At present, this coin can still be seen in the provincial capital coin stand<
recently, there is another well-made counterfeit nickel cadmium vanadium alloy coin on the market, which has smooth layout, a little white color, a little luster, sharp sound, hard quality, a little light, too strong three-dimensional sense, less verve and file marks
the counterfeit coins pressed with real silver are the most difficult to identify. They are proced in Guangdong and Hunan in recent years. The silver quality is excellent, the color is white, and the weight is basically the same, about 26-27g. Due to insufficient pressure, the side teeth are fuzzy, the side teeth are even but unnatural, and the pictures and texts are relatively clear, but there are also some sand holes. When viewed with a magnifying glass, the patterns and characters are realistic, But the blank space layout is not very smooth, no traces of natural circulation wear and ancient color coating
another kind of common silver coin that changes and adds characters often makes some veteran forget themselves for a while, that is, common Yuan Xiang coin plus English signature version; Add "Gansu" and "Soviet" in daruijin; Sun Xiang's founding commemorative coins, such as six pointed star changed to five pointed star, English and digital misprint coins, etc. As a matter of fact, there are graphic differences between the above two editions of silver coins. The restructuring method is to first remove the surplus, then weld on some silver, and then engrave. The handwriting is a little less verve, with knife marks, and will damage the surrounding layout. After washing, it is easy to find the flaws of knife marks by painting watercolor green
there are three kinds of counterfeit coins in the Qing Dynasty and the Republic of China: first, some commemorative coins, such as Cixi, were coined out of thin air by silversmiths. The second is the counterfeit coins made later by coin workers in the late Qing Dynasty, in which a few of the coins cast in the original mould still have some value. As for the re carved and pressed coins, although they are all made of pure silver, the situation is different. After a long period of circulation, this coin has wear marks and old color paste. It can't be identified from the material and old and new aspects, so it's easy to muddle through. We can only work hard from the design and text. The third is the common silver plated copper coins in the Republic of China. In the movies, it is common for businessmen to hold silver coins with their fingertips and blow them at their mouths, that is, to listen to the sound in their ears to distinguish the true from the false. Now a thin layer of silver plating has faded, revealing the basic excellent brass and copper coins, which are bumped and worn seriously, It is often mistaken for one of the few samples of silver mold copper coins<
the main features of several common counterfeit silver coins are introced as follows:
copperplate silver coins: its shape, size and pattern are completely similar to real silver coins, but it is mainly made of copper with rough pattern. When it is ground on a stone, the essence of copper appears, and the sound of knocking is sharp and bright with whistle
silver coin with lead: silver coin with lead inside and silver outside. Its pattern is the same as the normal silver dollar, but the sound is thick, ll, gloomy and with a click sound. When it is roasted by fire, lead will flow out
silver coin
the first method is to "knock", take two pieces of silver coins, hold the center of one silver coin with the fingertips of both hands, and slowly draw close to each other. When the two silver coins overlap about a quarter of the position, the first method is to "knock", It makes two silver coins gently knock on each other's edge. The sound of the real coin is clear, and the sound of the fake coin sounds wooden
the second method is to "blow". Hold the center of the silver dollar gently with your index finger and thumb, blow the vertical edge of the silver dollar, and quickly put it to your ear to listen. The tail sound of the silver coin with good quality is long and clear, while other metal or non pure silver coins will not have such a tail sound. For example, the silver coin with lead in the market is almost silent, because the lead is heavier and softer, It's not easy to shake the pronunciation. Nowadays, most forgers use computer plate making and use alloy materials to pass off silver. The color and text of the forger can be confused with the real. But in the end, because it is not silver, its pronunciation is sharp and long, and experts can tell the truth as soon as they distinguish it
the third method is "weighing". The real coin is generally full weight, and its circulation loss is about 26G. Its color is soft and white, its tone is soft and long, its text and picture are accurate, and its pulp is natural; Counterfeit coins are generally not heavy enough, or overweight e to thickening, and the color is gray
Wang Jianzhong, a collector who is keen on collecting silver coins, also told reporters that his good way to identify the authenticity of silver coins is to wipe the silver coins on a touchstone several times until there are silver scratches, and then drop hydrochloric acid and nitric acid on the scratches. At this time, if it is a real coin, the mixed liquid on the scratch is milky white, and the counterfeit coin is colorless and transparent. If the silver content of silver coin is not enough, the mixed liquid of hydrochloric acid and nitric acid also appears milky white, but not rich enough. The less the silver content, the lower the richness.
Yinyuan, also known as "Yinyuan", was originally imported from abroad, and is generally welcomed because of its uniform shape and convenient use. At the beginning of the 18th century, the folk began to imitate, and the local government intervened in unifying the official casting when they saw that it was profitable. In the second year of Xuantong (1910), the Qing Dynasty issued the regulations of the cloth coin system, established the silver yuan as the national currency, stopped the free casting in various places, and took the right of coinage back to the central government. The next year, it began to cast the "Qing silver coin", which created the currency circulation system with the silver yuan as the unit in modern China. Silver yuan is favored by the public and collectors for its beautiful casting form and unique precious metal currency form. However, the current market is full of counterfeits, which are mainly manifested in two categories: one is the so-called "mechanism version fine imitation silver coin" with low or even zero silver content, and the other is the so-called "pure silver high imitation silver coin" with high silver content. With the continuous improvement of casting methods and the application of computer scanning technology, some of them have reached the point of confusing the true with the false. In the collection practice, the author learns from other people's experience and his own lessons, and sums up several methods to distinguish the false, which can be taught by the same good and expert< First, listening quality. The sound of the silver yuan, which contains about 90% silver, is low, soft and melodious; Counterfeits are either crisp and harsh, or ll and ll. The common feature is the short aftertone. When striking and comparing, the less the contact surface between the two fingers, the better, to ensure the effect of natural vibration. It is said that in the old days, some bank owners were lying on their chairs with their eyes closed and asked the staff to bump the silver dollars one by one into the edge of the big water tank, listening to the sound to distinguish the true from the false< Weigh the weight, thickness and diameter. These two identification methods need the help of weighing tools such as balance, scale and vernier caliper. Silver in the long-term circulation will wear and tear consumption, generally speaking, can not reach the theoretical weight, but it is not "short weight", if the Kuping Qiqian two-part edition is less than 26 grams, there is doubt. The author once bought a pair of Guangxu Yuanbao and Xuantong Yuanbao made in Hubei Province, weighing 25 grams. The result of identification confirmed that the question was correct. The standard flat code of silver coin is: Ku Ping 1 / 2 = 37.31g, Ku Ping 7 / 2 = 26.81g, Ku Ping 3 / 6 = 13.41g, Ku Ping 1 / 4 = 5.37g, Ku Ping 7 / 2 = 2.69g, Ku Ping 3 / 6 = 1.34g. The weight, thickness and diameter of silver dollar are allowed to have errors, but if there are two extremes, nine out of ten there are problems< 3. Check the edge teeth. The side teeth of the silver coin mechanism are fine, symmetrical and regular. The side teeth of the counterfeit coin are rough and uneven, and some of them have traces of local filing. As long as careful, the naked eye is still relatively easy to distinguish. Some foreign silver coins circulated in the early stage of our country, such as "Hercules of France", whose side teeth are the foreign letters with equal spacing, so we should be familiar with and master the shape of side teeth of various currencies< 4. Look at the color. Silver and non silver metals can be distinguished from each other by their surface colors. Silver has a natural and pleasant luster, which is difficult to be achieved by cheap metals. The so-called "coated slurry" of fresh water ink color will be formed on the surface of silver coins that have been stored for a long time, but it is not as heavy as ancient coins. Once wiped, it will be as old as new. The chemical molecular structure of silver is very stable and will not change color. In addition, the fake silver plating can also be identified by wiping, and the camouflage coat can be stripped by repeatedly wiping with sand rubber< 5. Coin viewing. In the sun or light, the silver coin face and the eye, observe the bottom of the coin face is uneven phenomenon. The foundry equipment used by counterfeiters is difficult to make the bottom layer of the coin as flat as a mirror. Special attention should be paid to the connection between the text pattern and the bottom layer of the coin< 6. Check the wear. After a long time of circulation, silver will always have different degrees of wear and scratch marks. The natural procers have no rules to follow. The worn-out counterfeits show the regular wear surface and scratch marks of artificial behavior and machine behavior. Some people say that the best way to make old coins is to make old coins on molds, that is, to make worn surfaces, scratches and potholes on molds. The way to deal with it is to hold a number of silver coins of the same kind and examine them one by one under a low-power magnifying glass, and "Li Gui" will show its true shape< 7. To the atlas. Keep several kinds of well printed silver dollar catalogues on hand as far as possible, and carefully compare the real objects with them. Look at the frame position of the text pattern in the large part, the stroke processing of the text and the details of the pattern in the small part, and look for the flaws
all collectors of silver coins have their own identification methods, and they have something in common
nowadays, collecting all kinds of coins and antiques has become a trend. As far as the silver coins of the Qing Dynasty and the Republic of China are concerned, there are treasures ranging from several hundred thousand yuan to several yuan worth of silver coins. There are all kinds of counterfeit coins, and the materials used are also different, which makes people unable to guard against them. The following is a list of the differences between real silver coins and several kinds of fake silver coins for reference
the real silver coin is transparent in white, soft and malleable, with clear and pleasant sound when struck, smooth layout, symmetrical edges, natural and generous pictures and pictures, and traces of circulation wear. The silver coins stored at home are hard and fine in ancient black, and those buried underground will have some irregular hard green rust. Fake black and green rust will fade away when they are soaked in boiling water, which is easy to distinguish
at the end of 1970s, the Mn Ni alloy counterfeit silver coins cast in Guangdong, Guangdong, Fujian and Hunan mountainous areas were almost all over the country. The coins were rough in workmanship, with many sand holes, containing particles, uneven thickness, light in weight, and easy to turn black for a long time. However, they could not be painted black on the lime wall, so they were the only counterfeit silver coins that would be broken. By the early 1980s, the technology of copper nickel alloy cadmium plating counterfeit coins had made some progress. There were two kinds of counterfeit coins: the picture and text were fuzzy and the three-dimensional sense was too strong. The edge teeth were basically symmetrical but unnatural, there were traces of files, there was no wear and old color coating, the sound was sharp, and the light yellow appeared after the surface was electroplated and ground off, But there are still some county stalls selling them as real silver coins
the third kind of counterfeit silver coin appeared 10 years ago. It is made of nickel zinc alloy. Its color is black and bright, and it emits lead black light. It can draw black lines repeatedly on the lime wall, and its sound is also sharp and high. It is slightly more ll than that of copper nickel alloy. Its workmanship is more realistic on one side. Although the edge of the teeth is symmetrical, it is relatively stiff. The naked eye can also see some sand holes, spots and traces of file processing, At present, this coin can still be seen in the provincial capital coin stand<
recently, there is another well-made counterfeit nickel cadmium vanadium alloy coin on the market, which has smooth layout, a little white color, a little luster, sharp sound, hard quality, a little light, too strong three-dimensional sense, less verve and file marks
the counterfeit coins pressed with real silver are the most difficult to identify. They are proced in Guangdong and Hunan in recent years. The silver quality is excellent, the color is white, and the weight is basically the same, about 26-27g. Due to insufficient pressure, the side teeth are fuzzy, the side teeth are even but unnatural, and the pictures and texts are relatively clear, but there are also some sand holes. When viewed with a magnifying glass, the patterns and characters are realistic, But the blank space layout is not very smooth, no traces of natural circulation wear and ancient color coating
another kind of common silver coin that changes and adds characters often makes some veteran forget themselves for a while, that is, common Yuan Xiang coin plus English signature version; Add "Gansu" and "Soviet" in daruijin; Sun Xiang's founding commemorative coins, such as six pointed star changed to five pointed star, English and digital misprint coins, etc. As a matter of fact, there are graphic differences between the above two editions of silver coins. The restructuring method is to first remove the surplus, then weld on some silver, and then engrave. The handwriting is a little less verve, with knife marks, and will damage the surrounding layout. After washing, it is easy to find the flaws of knife marks by painting watercolor green
there are three kinds of counterfeit coins in the Qing Dynasty and the Republic of China: first, some commemorative coins, such as Cixi, were coined out of thin air by silversmiths. The second is the counterfeit coins made later by coin workers in the late Qing Dynasty, in which a few of the coins cast in the original mould still have some value. As for the re carved and pressed coins, although they are all made of pure silver, the situation is different. After a long period of circulation, this coin has wear marks and old color paste. It can't be identified from the material and old and new aspects, so it's easy to muddle through. We can only work hard from the design and text. The third is the common silver plated copper coins in the Republic of China. In the movies, it is common for businessmen to hold silver coins with their fingertips and blow them at their mouths, that is, to listen to the sound in their ears to distinguish the true from the false. Now a thin layer of silver plating has faded, revealing the basic excellent brass and copper coins, which are bumped and worn seriously, It is often mistaken for one of the few samples of silver mold copper coins<
the main features of several common counterfeit silver coins are introced as follows:
copperplate silver coins: its shape, size and pattern are completely similar to real silver coins, but it is mainly made of copper with rough pattern. When it is ground on a stone, the essence of copper appears, and the sound of knocking is sharp and bright with whistle
silver coin with lead: silver coin with lead inside and silver outside. Its pattern is the same as the normal silver dollar, but the sound is thick, ll, gloomy and with a click sound. When it is roasted by fire, lead will flow out
silver coin
9. digital currency refers to the digitization of money. Digitization doesn't mean scanning. This is just like digital signature. Digital signature does not mean scanning your signature into a digital image, or using the touchpad to obtain the signature, let alone your signature. Digital currency is often mistaken for virtual currency. But virtual currency refers to non real currency, for example, when you play the Three Kingdoms You have money, and that money is virtual. Of course, the virtual money will also have its real value. For example, if you buy her / his account from another player, you can get all the virtual assets of that player, and then it will be much easier for you to continue playing&# 160; Virtual money is not necessarily digital. For example, children play games with pebbles as virtual currency< On August 10, 2019, Mu Changchun said at the forum of 40 people of China finance that the central bank's digital currency will adopt a two-tier operation system
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