100 Mon

Morioka Domain, under the Nambu clan, operated its own currency exchange office as part of the broader sankin-kōtai economy that kept regional lords in perpetual fiscal tension — the alternating residence requirement between domain and Edo drained cash reserves and pushed many domains toward issuing their own paper instruments, known as hansatsu. Morioka was among the more active issuers in the Tōhoku region.

The 100 mon denomination places this squarely in everyday transactional use rather than large-scale domain finance. Redemption guarantees on hansatsu were only as good as the issuing domain's solvency, and Nambu finances were chronically strained through the late Edo period.