Japan 1 Mon "Kan'eitsūhō", 1739 – 1859
Iron alloy; blank reverse
Information
Country
Japan
Currency
Mon
(683 – 1953)
Coin type
Standard circulation coin
Denomination
1 Mon "Kan'eitsūhō"
Year
1739 – 1859
Composition
Iron
Shape
Round with a square hole
Alignment
Medal alignment ↑↑
Technique
Cast
Weight (g)
2.55
Diameter (mm)
23
Thickness (mm)
1.3
Demonetized
Yes
Mintage & Variants
| Date | Mintage | Comment | Frequency | |
|---|---|---|---|---|
| ND (1740) 一 | — | (unknown variant of) countermarked ㊀ on upper left and upper right rim | 14% | |
| Show all 12 variants | ||||
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