After Qin Shi Huang unified China, he also unified the currency. Abolish coins such as knives, cloth, and shells, and use "half two" as currency. That is, the later garden-shaped square hole copper coins of the Qin Kingdom were used, and the text was cast "half two" and weighed twelve baht (one or two were twenty-four baht), which was called the "half two" copper coins that weighed as much as the text. Since then, this kind of "half two" evolved from round hole ring money has been circulating in China for more than two thousand years.
During Wang Mang's reign as emperor, he implemented the treasure goods system, which was called "spring" at the time, and added two sets of coins, "six products of spring goods" and "ten products of cloth goods". Quan Zheng Liu Pin, also known as "Liu Quan", is the general term for the six kinds of round coins in Wang Mangbao's goods system. Namely, small springs, springs, young springs, middle springs, strong springs and large springs. Koizumi is six minutes in diameter and weighs one baht, and is worth a penny, with the words "Koizumi Naoichi" on it. The diameter, weight, and value of other fountain coins vary. The Six Springs are all undervalued coins, but the two coins of Koizumi and Oizumi are widely circulated.
Tongbao is a name for coins after the Tang Dynasty in China, named after the word "Tongbao" in the minting text. The coinage of the word "Tongbao" originated from the "Kaiyuan Tongbao" minted by Tang Gaozu Wude in the fourth year (621) of the five-baht coin. Kaiyuan Tongbao weighs two baht and four bases, and ten pieces weigh one or two. Since then, the copper coin is no longer as heavy as its text, and it is named after the weight, and it has been renamed "Tongbao" circulation. Coins also really began to become symbols of money, no longer exchanged for the value of money itself. Later generations have continued to use Tongbao, and before the word Tongbao, they are crowned with the era name, dynasty or country name, and minted on the surface of the coin. Such as Hou Liang's "Kaiping Tongbao", Southern Tang's "Tang Tongbao", Northern Song Dynasty's "Taiping Tongbao", Liao's "Chongxi Tongbao", Jin's "Dading Tongbao", Yuan's "Zhizheng Tongbao", and Ming's "Hongwu Tongbao". After the Xinhai Revolution, the "Tongbao of the Republic of China" in Guangdong, Fujian and other places is the latest Tongbao coin in China.
The main methods of counterfeiting ancient money are as follows: The first is the sand turning method. The sand turning method to create fake money generally adopts the method of mother money recasting, and it is rare to use money to counterfeit. In ancient times, when minting money, the whole box of mother money was put into the sand box, so the pressure of the sand mold was uniform, and the thickness of the minted coins was the same.
Identification of ancient coins based on copper color. The composition of ancient coins is generally obtained by chemical analysis, but this destructive test has no practical significance for the identification of ancient coins, so the copper color of ancient coins is more important in identification.
There are many kinds of spending money, among which the Yungui furnace spends money in a rough style and a frank personality, but most collectors have a considerable understanding of the beauty of extensiveness and frankness, so the eyes are mostly limited to the exquisite spending of copperplate engravings in the Su furnace and Sichuan furnace process, but often meticulously slightly dull. Thick lines outlined, multiple charms do not emphasize details, randomly waved, in one go, but not recognized by the market.
At present, the mainstream of spending money collection is Toki language money, and the more remote religious categories spend money to a less serious degree. Only because religion seems to be covered with a veil of mystery, most collectors are reluctant to feel the culture and charm of religion, which is the root cause of such phenomena as "mountain ghosts have no fine products".
Spend money collecting, valuing the orthodox beauty of the celestial place and despising the beauty of the alien. For example, the listing class can express all the themes expressed by other money, and the hanging part can also be used to show more words or patterns. The shape, line, text and other information of the hanging part can be used as an important basis for judging the furnace, but most collectors deny its value simply because of its shape.
The collection of precious ancient coins is not more valuable the older it is
In recent years, with the continuous heating up of the coin collection market, ancient coins have gradually entered the eyes of collectors, and at coin auctions around the world, ancient coins have also been auctioned at good prices many times. Recently, Shanghai Hongsheng 2014 Spring Auction Ancient Coin Coin Gold and Silver Ingot Special Transaction Volume totaled 614 pieces, with a total transaction price of more than 5.43 million yuan and a turnover rate of 63%. Among them, the Qing "Xianfeng Yuanbao" Baoquan Dang 500 eagle mothers were sold at a price of 690,000 yuan, becoming the standard king of this special session. At this year's Jiade Spring Auction, the transaction rate of the ancient money collection was as high as 88.23%, and the total transaction price was 6.4883 million yuan.