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1 Mon "Jōgan Eihō" - Seiwa
🇯🇵 Japan · 1 Mon "Jōgan Eihō" - Seiwa · 1333–1870
| Weight | 2.8 g |
| Diameter | 19.5 mm |
| Composition | Copper |
| Melt value | — |
| Reference | DHJ# 1.55-1.58, JC# 01-9 |
| Collector's Key World ID | CKW-JPN-68 |
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Varieties & References
No additional varieties recorded.
External references
Frequently Asked QuestionsFAQ
What is a Japan 1 Mon "Jōgan Eihō" - Seiwa made of?
Copper, weighing 2.8 g.
What is the melt value of a Japan 1 Mon "Jōgan Eihō" - Seiwa?
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 Japan 1 Mon "Jōgan Eihō" - Seiwa 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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