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1 Mon "Kan'eitsūhō" (Iron alloy; blank reverse)
🇯🇵 Japan · 1 Mon "Kan'eitsūhō" (Iron alloy; blank reverse) · 1333–1870
| Weight | 2.55 g |
| Diameter | 23 mm |
| Composition | Iron |
| Melt value | — |
| Reference | C# 1.1a |
| Collector's Key World ID | CKW-JPN-31 |
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Varieties & References
No additional varieties recorded.
External references
Frequently Asked QuestionsFAQ
What is a 1739 Japan 1 Mon "Kan'eitsūhō" (Iron alloy; blank reverse) made of?
Iron, weighing 2.55 g.
Is the 1739 Japan 1 Mon "Kan'eitsūhō" (Iron alloy; blank reverse) 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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