| Emitent | Japan |
|---|---|
| Rok | 848-859 |
| Typ | Standard circulation coin |
| Hodnota | 1 Mon |
| Měna | Mon (683-1953) |
| Složení | Copper |
| Hmotnost | |
| Průměr | |
| Tloušťka | |
| Tvar | Round with a square hole |
| Technika | Cast |
| Orientace | |
| Rytci | Emperor Ninmyō, Fujiwara Yoshiaki |
| V oběhu do | 25 November 0987 |
| Reference | DHJ#1.48 - 1.49 |
| Popis líce | |
|---|---|
| Písmo líce | |
| Opis líce | 長 寳 年 大 (Translation: Great treasure of many years (read clockwise)) |
| Popis rubu | Plain |
| Písmo rubu | |
| Opis rubu | |
| Hrana | Smooth |
| Mincovna | |
| Náklad | 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 |
| Poznámky |