Mameitagin 'Hōei Mitsuhō Mameitagin' Uniface Daikoku

Produced for just over a year under the Hōei monetary reform of 1710, this mameitagin variety was part of a deliberate debasement policy initiated by the Tokugawa shogunate under Arai Hakuseki's influence — though Hakuseki himself opposed the debasement and would later push through a revaluation restoring higher silver content. The Daikoku stamp identifies the Kinza mint's authorization mark for this specific alloy grade, distinguishing it from earlier high-purity mameitagin issues that circulating merchants had come to trust.

The extremely short production window makes surviving examples genuinely scarce.