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1 Mon 'Genyūtsūhō' Seal script, 'Kanōde Genyū'
| Issuer | Japan |
|---|---|
| Year | 1616-1646 |
| Type | Standard circulation coin |
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| Composition | Log in to see details |
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|---|---|
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| Reverse script | Chinese (traditional, regular script) |
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| Edge | Plain. |
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| Additional information |
Cast — not struck — at a private foundry operated by the Kanō family in the early Edo period, this piece belongs to a category of commercial coinage tolerated rather than officially sanctioned by the Tokugawa shogunate. The bakufu had not yet consolidated monetary policy tightly enough to suppress regional and merchant-family casting operations, and the Kanō foundry exploited that window for three decades.
The wide DHJ reference range reflects genuine die and mold variation across the production run — minor differences in calligraphic execution and casting quality distinguish individual types within the series.