Period: Muromachi period (1336–1573).
Mei: No signature.
Sugata: Hira-zukuri, tori-zori with bo-hi.
Overall length: 14.37 inches (365.00 mm).
Nagasa: 13.94 inches (354.00 mm).
Nakago: Ubu nakago 4.33 inches (110.00 mm). One mekugi-ana, no visible yasurime, ha agari kurijiri.
Kissaki: O-maru boshi, no yokote line.
Moto-haba: 1.07 inches (27.30 mm). Saki-haba: 0.89 inches (22.60 mm). Moto-gasane: 0.17 inches (4.30 mm). Saki-gasane: 0.10 inches (2.60 mm).
Sori: 0.28 inches (7.00 mm).
Hamon: Kataochi-gunome and ko-gunome with ko-ashi, sunagashi, kinsuji and yubashiri.
Hada: Itame, with utsuri and chikei.
Blade condition: 55% polish. Rather tired, some ware, but this is not unexpected in Koto swords. Has a knick on the cutting edge, but a good polisher should be able to deal with it. I have dropped the price accordingly.
In shirasaya with wooden habaki.
This sword came from a Japanese sword museum. It was, I am informed, formerly owned by Prince Komatsunomiya.