1 Cash Kaiyuan Tongbao, Yin

The Min Kingdom, one of the Ten Kingdoms that fragmented China following the Tang collapse, issued lead cash during its final death spasm — the state was consumed by internecine violence and was effectively destroyed by the Southern Tang in 945. Lead coinage of this period was an emergency measure, the copper supply having been exhausted or disrupted by the relentless internal warfare that characterized Min's last years. Hartill 15.54 is among the more obscure survivals of a polity that lasted barely half a century.