| Emitent | Japan |
|---|---|
| Rok | 870-890 |
| Typ | Standard circulation coin |
| Nominał | 1 Mon |
| Waluta | Mon (683-1953) |
| Skład | Copper |
| Waga | 2.8 g |
| Średnica | 19.5 mm |
| Grubość | |
| Kształt | Round with a square hole |
| Technika | Cast |
| Orientacja | |
| Rytownik(zy) | Fujiwara Ujimichi |
| W obiegu do | 25 November 0987 |
| Źródło(a) | DHJ#1.55 - 1.58 |
| Opis awersu | Four characters around hole |
|---|---|
| Pismo awersu | |
| Legenda awersu | 貞 寳 觀 永 (Translation: Everlasting treasure of the Jōgan era (read clockwise)) |
| Opis rewersu | Plain |
| Pismo rewersu | |
| Legenda rewersu | |
| Krawędź | Smooth |
| Mennica | |
| Nakład | 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 |
| Uwagi |