This method takes real money as the model, and the forged casting copper water is mostly made by melting ancient copper coins or bronze mirrors. So cast copper is still bronze or red copper. Because the heat rises and the cold shrinks, the transfer of money is not enough, that is, it is transferred to a small turn. There are many such counterfeit money listed, and some of them can be confused.
2. Change the method
There are quite a few fakes, such as the five baht engraved as Taiqing Fengle and the small cargo spring engraved as Yongjing Jinghe. By selecting thicker old copper coins, the original characters are ground off and another rare product is engraved. There is also the choice of copper coins with vague lettering, or if the moon and stars are carved into two or two or half. Change five baht into five baht or five baht, and do something unconventional in various ways.
3. Adhesive splicing method
This method is mainly used for Li Anquan to share the same money. Take two or several pieces of the same product, grind off some money, stick them together to form the back of Li Anquan or the same coin, and grind off the back of two old coins to make them double-sided.
4. The color is the same as before
Unearthed ancient coins have been corroded underground for a hundred years, some are covered with green, some are red, green, yellow and white, and the spots refute that the ancient coins handed down from the coin industry are "pit rust". Due to the long-term enjoyment of oil and sweat, the money body is yellow or brown. In order to obtain the surface effect of "pit-making" and "handed down from generation to generation", counterfeiters have made the following ancient and common methods on the color of counterfeit money:
One is to forge green, because the unearthed ancient money has green rust, so it can be realistic to forge ancient money and apply green rust.
There are seven ways to forge green rust:
(1) Buried the counterfeit money in the ground and took it out after two or three years, which was covered with green rust;
(2) The forged coins are soaked in hydrochloric acid or acetic acid, and then buried in the soil. After a year and a half, it was taken out and covered with green rust;
(3) Mixed with glue and green powder, coated on money, it becomes a kind of rust similar to hard green.
(4) Mix rosin and green powder and coat it on counterfeit money to become a kind of embroidery similar to hard green;
(5) The green enamel painted with fake money is as hard as green embroidery after one and a half years;
(6) Sticking the real copper rust on the fake to make it look hard and green;
(7) Soak the money in vinegar and add copper sulfate.
The second method is red rust forgery, and ancient coins unearthed also have red rust.
There are four ways to forge red rust:
(1) immerse counterfeit money in cold water and burn it to make it red rust; Then immersed in hydrochloric acid or acetic acid and buried in the soil. After a year and a half, there will be red and green rust, which is quite similar to the unearthed ancient money.
(2) Red and green rust can also be made by mixing red powder with glue;
(3) Red-green mixed rosin is coated on counterfeit money to become red-green rust;
(4) Red and green enamel can also cause red and green rust on counterfeit money.
The third is to forge ancient laws handed down from generation to generation. Ancient coins handed down from generation to generation are often dark brown in color and are called ancient counterfeit coins.
There are usually two ways to fake this color:
(1) After the counterfeit money is calcined and taken out by fire, the surface of the cold money will appear black, and it will be almost the same as the real money after one and a half years.
(2) Soak the counterfeit money in hydrochloric acid or sulfuric acid for a day or two, then take it out, it will turn black, and then wrap it with a belt for a year and a half, and the color will gradually shine, which is the same as the ancient money handed down from generation to generation.