1 Mon 'Kōbu Tsūhō' Kajiki-sen

The Kajiki-sen were among dozens of regional bronze cash coins privately cast during Japan's Sengoku and early Edo periods, when the absence of a unified national coinage left commerce to fend for itself. Local domains, temples, and merchant houses operated their own furnaces, producing coins of wildly inconsistent quality — a problem the Tokugawa shogunate would eventually suppress by consolidating mint authority, though it took most of the 17th century to actually enforce.

The "Kajiki" designation identifies the casting origin as Kajiki in Satsuma Province, present-day Kagoshima Prefecture. Satsuma's political semi-independence under the Shimazu clan meant regional coin production persisted there longer than in domains more firmly under Edo's thumb.