`Tenpō Mameitagin` 保 around 常是
€285,359.00
| Issuer | Japan |
| Year | 1837-1858 |
| Type | Standard circulation coin |
| Value | |
| Currency | Monme Silver / Monme-Gin / Ginme (1601-1874) |
| Composition | Billon (.260 silver) |
| Weight | |
| Dimensions | |
| Thickness | |
| Shape and Technique | Irregular Hammered (bean) |
| Orientation | |
| Engraver(s) | |
| In circulation to | 28 June 1868 |
| Reference(s) | JNDA#09-68 |