Representative transition issue

Man’en Nibukin

A widely issued low-fineness two-bu gold piece associated with the Man’en emergency response and inflation.

万延二分金

Context

Historical and monetary setting

Its continued use across the political transition demonstrates why issue authority and circulation date must be stored separately.

Identification

Confirm rectangular geometry, inscription, punches, mass, metal, and evidence of casting or modern tooling.

Evidence boundary

Later circulation does not transform a Tokugawa issue into a Meiji base type; the installed exact pair is shared with the Edo issue route.

Issue evidence

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Evidence

These links support the claims on this page. Source authority does not imply permission to republish source images.

History of Japanese Currency: Opening of the Country and Gold Outflow Bank of Japan Currency Museum

Treaty-port exchange, Mexican dollars, gold outflow, Man’en reform, transitional currency, and the 1871 decimal system.

Open source

Late Tokugawa coin display records Bank of Japan Currency Museum

Museum catalog fineness values for Ansei and Man’en gold and silver issues.

Open source