Mameitagin 'Genroku Mameitagin' double Daikoku

The Genroku Mameitagin was struck as a direct consequence of the shogunate's fiscal crisis in the 1690s, when Councillor Ogiwara Shigehide pushed through a deliberate debasement of the silver coinage — dropping fineness from roughly 80% to 64% — to generate revenue for the Edo government. The reform was deeply unpopular, and older high-silver pieces were hoarded almost immediately, following Gresham's Law with textbook precision.

The "double Daikoku" chop marks were applied at the Edo and Osaka mints as an assay and authorization stamp. Their presence here confirms the piece passed official re-examination — a detail that places it firmly within the managed recall and restamping program that accompanied the debasement rollout.