A Ko-Uda tachi
Nambokucho period (late 13th-early 14th century)
Sugata (configuration): hon-zukuri, iori-mune, extended kissaki and slight koshi-zori
Kitae (forging pattern): ko-itame mixed with masame in ji-nie with chikei
Hamon (tempering pattern): slightly undulating sugu-ba tending toward ko-notare based in nie
Boshi (tip): ko-maru
Nakago (tang): o-suriage with one hole and kiri file marks
Habaki (collar): two-piece, silver
Nagasa (length from tip to beginning of tang): 30in (76.2cm)
Motohaba (width at start of tempered edge): 1 1/8in (2.7cm)
Sakihaba (width before tip): 3/4in (1.9cm)
In shirasaya (wood storage scabbard) with sayagaki attributing this sword to Yamato Shikkake, by Sato Kanzan and dated 1951
With kantei certificate no. 1147 issued by the Nihon Token Hozon Kai (Japan Sword Preservation Society), dated 2004.5.16.
With Tokubetsu Hozon Token (Sword fitting worthy of preserving) certificate no. 149309 issued by the Nihon Bijutsu Token Hozon Kyokai (The Society for the Preservation of the Japan Art Sword), dated 2004.4.6.