1 Mon 'Tenshōtsūhō'

Tenshōtsūhō were ordered by Toyotomi Hideyoshi in 1587 as part of his broader effort to standardize currency across a Japan he was in the process of unifying by force. The coins were struck at multiple locations under central authorization — a deliberate break from the fragmented, domain-by-domain monetary arrangements that had characterized the Sengoku period. Production was short-lived; within years, Hideyoshi's gold and silver coinage took administrative priority, and the Tenshōtsūhō faded from official use before achieving anything close to national circulation.

Surviving examples vary considerably in flan preparation and casting quality, a direct consequence of decentralized production across different foundries.