During the Spring and Autumn Period and the Warring States Period, with the development of commodity economy, the metal weighing currency that needs to be divided and identified in circulation gradually became unsuitable and was replaced by metal coins. Most ancient coins in China were cast in the form of copper alloy, and square hole coins (copper coins) were the most common ancient coins.

Square hole copper coins should say that the sky is round and the ground is square. In ancient times, people thought that the sky was round and the earth was square, so Qin Shihuang made money on this basis.

After Qin Shihuang unified China, he also unified the currency. Abolish coins such as knives, cloth and shells, and use "half Liang" as currency.

These four misunderstandings should be avoided in expanding the collection of ancient coins.

One of the misunderstandings: non-human currency is not hidden. It is understandable that collectors of ancient coins take some well-known famous coins such as "Five baht money", "Revelation to Bao Tong" and "Taihe Chongbao" as the main direction of collecting ancient coins. However, the long-term development of this kind of collection behavior will make the road of all friends' collection narrower and narrower.

Myth 2: Don't hide it if it's not copper coins. There were many kinds of metal coins in ancient China, such as copper, iron, tin and silver. Among them, copper coins are the largest and most common, so some spring friends mistakenly think that only copper coins are the mainstream of ancient coin collection.

Myth 3: Don't hide the whole coin. In spring, some friends blindly stare at the collection of ancient coins with complete appearance and are biased against ancient coins with incomplete appearance. As we all know, in the long-term social development process, due to the characteristics of metal, ancient metal coins often appear rusty, incomplete outline, vague coin surface and so on.

Myth 4: Don't hide non-large coins. When collecting ancient coins, some Quanyou always habitually focus on the larger metal coins, and are eager for several ancient coins such as "Supreme Bao Tong", "Hongwu Bao Tong" and "Xianfeng Bao Tong", while ignoring the smaller ones.

Baidu encyclopedia-copper coins

People's Daily Online-The collection of ancient coins should avoid these four misunderstandings.