| Issuer | Japan |
| Year | 1835-1870 |
| Type | Standard circulation coin |
| Value | 100 Mon |
| Currency | Mon (683-1953) |
| Composition | Bronze (Cu 78%, Pb 12%, Sn 10%) |
| Weight | 20.7 g |
| Dimensions | |
| Thickness | 2.6 mm |
| Shape and Technique | Oval (With a square hole) Cast |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | 31 December 1891 |
| Reference(s) | C#7, DHJ#5.5-12 |
| Obverse description | Four vertical characters divided by hole |
| Obverse script | Chinese (traditional, regular script) |
| Obverse lettering | 天 保 通 寶 (Translation: Tenpō Currency) |
| Reverse description | Value above hole and signature of the mint official below |
| Reverse script | Chinese (traditional, regular script) |
| Reverse lettering | 當 百 (Translation: Equal Hundred) |
| Edge | Smooth, paulownia stamps on the left and right side (various |
| Mint | |
| Mintage | ND
(1835-1836) - 本座中郭 HONZA CHŪKAKU; some source say 1866~1870 - ND (1835-1836) - 本座長郭 HONZA CHŌKAKU; vertically elonggated square around hole; narrow 貝 in 寳 - 29 710 700 ND (1835-1870) - Unknown variant - 484 804 054 ND (1837-1842) - 本座細郭 HONZA SAIKAKU; some source say 1835~1836 - 10 024 500 ND (1847-1868) - 本座広郭 HONZA KŌKAKU - |
| Catalog ID | 7909703900 |
| Comments |
