One (1) koban coin, Ansei
Japan, 1859
Obverse Image: A fan-shaped Kiri crest, a square panel with the value, a square panel with the signature of the Mint Official, and another fan-shaped Kiri crest.
Obverse Text: Romanization: ICHI / RYO / MITSUTSUGU (Translation: One Ryo Mitsutsugu).
Reverse Image: Butter-fly-like signature, and various other characters, the stamps of mint officials.
Reverse Text: [Needs Translation]
General Information: Value 1 Ryo.