A katana | Signed Naminohira Sadayasu saku (made by Naminohira Sadayasu) | Edo period, dated Tenbun ninen hachigatsu hi (a day in August, 1534)

Property from a Private Collector in Los Angeles

A katana

Signed Naminohira Sadayasu saku (made by Naminohira Sadayasu)

Edo period, dated Tenbun ninen hachigatsu hi (a day in August, 1534) 

Sugata [configuration]: Shinogi-zukuri, iori-mune, koshi-zori, chu-kissakiKitae [forging pattern]: Flowing itame and running mokume-hada, with ji-nie and chikei

Hamon [tempering pattern]: Suguha in nioi, sunagashi

Boshi [tip]: Ko-maru boshi

Nakago [tang]: Ubu, three mekugi-ana, ha-agari kurijiri, yoko yasurime, signed Naminohira Sadayasu saku (made by Naminohira Sadayasu), and dated Tenbun ninen hachigatsu hi (a day in August, 1534) 

Habaki [collar]: Single gold-clad 

Koshirae [mount]: The black lacquer saya with tachi style mounts, the fittings in shakudo and gilt, the menuki in the form of a coiled dragon

With shirasaya [plain wood scabbard]

Nagasa [length from kissaki to machi]: 68.1 cm., 26⅞ in.

Sori [curvature]: 2.2 cm., ⅞ in. 

Saki-haba [width at the yokote]: 2 cm., ¾ in. 

Moto-haba [width at the machi]: 2.9 cm., 1⅛ in. 

Accompanied by a certificate of registration as a Tokubetsu Hozon Token [Sword Especially Worthy of Preservation], no. 101184 issued by the Nihon Bijutsu Token Hozon Kyokai [Society for the Preservation of the Japanese Art Sword], dated Showa 62 (1987).