Mameitagin 'Genbun Mameitagin' 文 cluster

Genbun Mameitagin were issued following the Genbun monetary reform of 1736, which dramatically debased the silver coinage — dropping fineness from the .800 of the Shotoku-era pieces to roughly .460. The Tokugawa shogunate had been systematically reducing silver content across multiple reforms since 1695, each time funding fiscal shortfalls at the cost of merchant confidence. This particular cluster carries the 文 assay stamp, one of several certification marks applied by the Ginza silver monopoly to authenticate the pieces and denote their period of production within the broader Mameitagin series.