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4 Mon "Kan'eitsūhō" (Ansei Copper Alloy; 11 waves)
🇯🇵 Japan · 4 Mon "Kan'eitsūhō" (Ansei Copper Alloy; 11 waves) · 1333–1870
| Weight | 4.34 g |
| Diameter | 27 mm |
| Composition | Copper |
| Melt value | — |
| Reference | Hartill# 4.256 |
| Collector's Key World ID | CKW-JPN-43 |
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Varieties & References
No additional varieties recorded.
External references
Frequently Asked QuestionsFAQ
What is a 1857 Japan 4 Mon "Kan'eitsūhō" (Ansei Copper Alloy; 11 waves) made of?
Copper, weighing 4.34 g.
What is the melt value of a 1857 Japan 4 Mon "Kan'eitsūhō" (Ansei Copper Alloy; 11 waves)?
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 1857 Japan 4 Mon "Kan'eitsūhō" (Ansei Copper Alloy; 11 waves) 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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