| Emitent | Japan |
|---|---|
| Rok | 848-859 |
| Typ | Standard circulation coin |
| Nominał | 1 Mon |
| Waluta | Mon (683-1953) |
| Skład | Copper |
| Waga | |
| Średnica | |
| Grubość | |
| Kształt | Round with a square hole |
| Technika | Cast |
| Orientacja | |
| Rytownik(zy) | Emperor Ninmyō, Fujiwara Yoshiaki |
| W obiegu do | 25 November 0987 |
| Źródło(a) | DHJ#1.48 - 1.49 |
| Opis awersu | |
|---|---|
| Pismo awersu | |
| Legenda awersu | 長 寳 年 大 (Translation: Great treasure of many years (read clockwise)) |
| Opis rewersu | Plain |
| Pismo rewersu | |
| Legenda rewersu | |
| Krawędź | Smooth |
| Mennica | |
| Nakład | ND (848-859) - DHJ# 1.48; large size and characters - ND (848-859) - DHJ# 1.49; small size; 大 touches outer rim - |
| ID Numisquare | 2293101900 |
| Uwagi |