Representative Edo issue
Manen Koban: The Small Final Tokugawa Koban Standard
The Manen Koban is the terminal, sharply reduced Koban standard in the museum recoinage sequence.
万延小判Man'en Koban
- Years
- From 1860
- Metal branch
- gold
- Value or unit
- 1 ryo
- Catalog fineness
- 57%
Context
Historical and monetary setting
Introduced in 1860 during the late Tokugawa monetary crisis; the wider foreign-trade transition is covered by the Bakumatsu–Meiji catalog.
Identification
How to classify the object
Its reduced fabric must be separated from other small gold denominations and from later copies.
Evidence boundary
What this page does not claim
This page stops at identification and recoinage context and does not implement the Bakumatsu-Meiji transition.
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Related Edo references
Evidence
Sources and scope
These links support the claims on this page. Source authority does not imply permission to republish source images.
Genbun through Manen Koban and Tempo Goryoban display-table masses and fineness values.
Open source