Obverse
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Reverse
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1 Mon "Gennatsūhō"
🇯🇵 Japan · 1 Mon "Gennatsūhō" · 1333–1870
| Weight | 3.1 g |
| Diameter | 24 mm |
| Composition | Copper |
| Melt value | — |
| Reference | DHJ# 3.43, 3.44, JC# 07-2-2 |
| Collector's Key World ID | CKW-JPN-18 |
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Varieties & References
No additional varieties recorded.
External references
Frequently Asked QuestionsFAQ
What is a 1617 Japan 1 Mon "Gennatsūhō" made of?
Copper, weighing 3.1 g.
What is the melt value of a 1617 Japan 1 Mon "Gennatsūhō"?
Its melt value is its metal content multiplied by the current spot price. See our melt calculator on the metals pages for a live figure.
Is the 1617 Japan 1 Mon "Gennatsūhō" a key date?
It's a more common issue overall, though scarcer varieties may carry a premium — see the varieties list.
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