10 Cash Liyong Tongbao, official Yi

Wu Sangui struck these coins after declaring himself Emperor of the Great Zhou dynasty in 1678, though the Liyong era name had been in use since 1674 when he was still nominally a vassal in rebellion against the Qing. The mint at Yunnan province was his primary production center, and the coinage was intended to fund a military campaign that had already begun unraveling — Wu died just months after taking the imperial title, and Qing forces suppressed the revolt completely by 1681.

The Yi mint designation distinguishes this piece within a series struck at multiple locations across Wu's controlled territories during the Revolt of the Three Feudatories.