| Emitent | Japan |
|---|---|
| Rok | 870-890 |
| Typ | Standard circulation coin |
| Hodnota | 1 Mon |
| Měna | Mon (683-1953) |
| Složení | Copper |
| Hmotnost | 2.8 g |
| Průměr | 19.5 mm |
| Tloušťka | |
| Tvar | Round with a square hole |
| Technika | Cast |
| Orientace | |
| Rytci | Fujiwara Ujimichi |
| V oběhu do | 25 November 0987 |
| Reference | DHJ#1.55 - 1.58 |
| Popis líce | Four characters around hole |
|---|---|
| Písmo líce | |
| Opis líce | 貞 寳 觀 永 (Translation: Everlasting treasure of the Jōgan era (read clockwise)) |
| Popis rubu | Plain |
| Písmo rubu | |
| Opis rubu | |
| Hrana | Smooth |
| Mincovna | |
| Náklad | ND (870-890) - DHJ# 1.55; large characters - ND (870-890) - DHJ# 1.56; 貞 and 寳 have short feet - ND (870-890) - DHJ# 1.57; wide 貞 with spread feet - ND (870-890) - DHJ# 1.58; small 貞 - |
| ID Numisquare | 3575722370 |
| Poznámky |