Japan/ 50 Yen/ 1981
  |
| Material: | Weight: | Diameter: | Edge: | Alignment: |
| 75% Copper, 25% Nickel | 4 gr. | 21 mm. | Reeded. | Medal (0º) |
| Without Mint mark - Japan Mint. Osaka. |
|
| Material: | Weight: | Diameter: | Edge: | Alignment: |
| 75% Copper, 25% Nickel | 4 gr. | 21 mm. | Reeded. | Medal (0º) |
| Without Mint mark - Japan Mint. Osaka. |