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1 Yen - Heisei 1-31
🇯🇵 Japan · 1 Yen - Heisei 1-31 · 1870–2025
| Weight | 1 g |
| Diameter | 20 mm |
| Mintage | mint-set issues only: 500,000; Proof issues: 108,000 |
| Edge | Plain |
| Alignment | ↑↑ Medal |
| Composition | Aluminium |
| Melt value | — |
| Reference | Y# 95.2 |
| Collector's Key World ID | CKW-JPN-747 |
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Varieties & References
No additional varieties recorded.
External references
Frequently Asked QuestionsFAQ
What is a 2011 Japan 1 Yen - Heisei 1-31 made of?
Aluminium, weighing 1 g.
Is the 2011 Japan 1 Yen - Heisei 1-31 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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