Centuries earlier than the Lydia coin in Asia Minor, which was once considered as the earliest metal coin in the world. Therefore, the bronze shell of Shang Dynasty can be well-deserved called "the earliest metal coin of mankind".
The copper shell, as its name implies, is a kind of copper coin made by imitating shells. The most representative thing is that it has a shell tooth in the middle of the front. According to whether there are words on its surface, it can be divided into copper cladding and copper cladding.
Materials are decibels, copper and so on. The shape of the casting is very similar to that of the real shellfish, and the volume is small, which is convenient for circulation and carrying. After Qin Shihuang unified the six countries, he abolished all kinds of currencies in the six countries and uniformly minted and issued half a penny.
Copper-free copper shell
The unwritten copper shell is made of copper and imitates the appearance of shells. Generally, it is 33 mm long, 23 mm wide and weighs 6-7 grams. It is made by a foundry, with scalloped lips on an empty stomach and a tooth pattern on each side. The number of tooth profiles is 9- 14 pairs.
Mainly in the middle and late Spring and Autumn Period, Sanjin, Shandong were cast in the middle and lower reaches of the Yellow River according to Zuo Zhuan. Ding Gong four years "Qilu area.
There are "six tribes of Yin people". According to the location of Huixian County, Henan Province, the northern part of Henan Province was originally the land of Shang Dynasty, and the Records of Geography in Hanshu is one of the settlements of "Yin adherents". It can be seen that these areas have profound cultural traditions, so it can also be seen that the main currency of the Shang Dynasty is the Northern Currency.
Modern currency is a kind of virtual currency issued by internet companies, which is mainly used for online social platforms and games, and is one of the popular virtual currencies. Users can buy or get coins in the application and use them to buy goods or virtual goods in the application on the platform. Similar to other virtual currencies, North Currency has no face value, and it is not printed, minted or minted.
Compared with traditional currency, virtual currency is more portable, can be used at any time, and is easier to transfer and trade through the Internet.
The development of virtual currency stems from Internet technology and financial innovation. Virtual currency is widely used in the field of digital economy, in which social media and game applications occupy the main market share.
On these platforms, virtual currency can be used for the purchase and exchange of chat expressions, digital gifts, props and equipment, card games and other content. Therefore, the emergence of virtual currency provides users with more convenient and diversified online payment methods.