Sugata : shinogi-zukuri and a shallow tori-zori, a iori-mune and chu kissaki. The forging pattern (kitae) is with a very tight masame hada almost muji-hada throughout. The hamon : sanbon-suji in ko-nie and nioi, yakidashi at the base.
The tip (boshi) O-maru with kaeri.
The nakago (tang) ubu with slight ha-agari kuri-jiri and one mekugi-ana.
The mounting : koshirae, a black lacquered saya with narrow diagonal ribs and plain black kojiri, kurikata and koi-guchi. The tsuka with green ito over white same, the shakudo-nanako fuchi-kashira show gold water dragons as the menuki. The round iron tsuba is with fan-shaped and gold .
Nagasa : 70,6cm. Moto-haba : 3,2cm. Saki-haba : 2,2cm.
Edo period : late 18th early 19th century.