Sichuan copper coins were of good quality when they were cast at the end of the Qing Dynasty. The copper content of each copper yuan is about 96% - 97%. Except that the old 100 and the old 200 are red copper, the others are white yellow white lead, so the copper quality is not as pure as that cast in the late Qing Dynasty
From June 1903 to November 1935, when Sichuan copper coins were minted by the military government, the French coins were first circulated before they were gradually withdrawn from circulation. In 1900, a round copper coin (copper yuan) was cast in Guangdong. The next year, the provinces along the river and the coast were allowed to copy. Sichuan Tongyuan Bureau was set up in Chengdu to coin Dang five and Dang ten yuan copper coins, with an increase of 20 yuan copper coins in July.
In April 1912, the bronze coin template of the Qing Dynasty was abolished and the bronze yuan with the character of "Han" was cast, with three denominations of Dang 10, 20 and 50. In 1913, 100 and 200 copper coins were added. The copper coin is also called "Han" copper coin, because there is a seal character "Han" in the central circle on the reverse side and there are dozens of horizontal and straight lines at the bottom of the character。