Date: Western Han (206 BC - AD 8)
Material: Bronze
The early Han witnessed several changes to the Banliang coin system, as a result of which, coins of different weight were cast successively. Since the 5th year of Yuanshou (118 BC), Western Han successively cast Junguo Wuzhu coin, Chize Wuzhu coin and Shanglin Sanguan Wuzhu coin and put them in circulation. Wuzhu coins then became the main currency in circulation during the Western Han and Eastern Han dynasties. Among them, the casting of the Shanglin Sanguan Wuzhu coin marked the return of the right to mint coinage to the central authorities and the final establishment of the Wuzhu coin system.