Coins (coins; Coins; Hard currency; Cash; Pieces), that is? Money made of metal. It has a history of thousands of years in China. The earliest metal coin is the Shang Dynasty Baode copper shell, which has been more than 3,000 years.
Metal coins have the advantages of convenient use, wear resistance and long circulation life. In addition to its own monetary function, it also has a high artistic appreciation and value preservation function.
China is one of the earliest countries to use money in the world, and China has a very long history of using money. It is said that money went up four or five thousand years ago or even earlier. Sima Qian said in Historical Records: "The road of agriculture, industry and commerce is smooth, and the turtle shell is rich in financial resources." Therefore, it was a long time, because it was before Gao Xin, and it was so embarrassing to remember the cloud. "There is also a record in Ban Gu's Records of Eating Goods in Han Dynasty." The golden knife and tortoise shell were distributed to the rich and the goods ... from Shennong world. The primer says, "The Yellow Emperor took the copper from the first mountain and cast it into a knife. "Wait a minute.
This is a coin in the original sense, and the purpose of issuing it is to "circulate". Sovereign issuers put on the market at face value and trade at face value. Money is made of ordinary metals or precious metals; The circulation is not limited, generally larger; The issue year can be intermittent or continuous; Coins with the same face value and the same pattern are issued in different years. According to its practical use, it can be divided into "external circulation" and "internal circulation".