An Owari o-tanto
By Nobuuji, Edo period (second half 17th century)
Hira-zukuri, iori-mune slight torii-zori with an o-itame hada and a suguha tempered edge of ko-nie with ko-sunagashi and a ko-maru boshi, the ubu tang slightly machi-okuri with two holes and katte-sagari file marks, signed Nobuuji saku, 11 5/8in (29.5cm) long; one-piece silver-foil habaki; in shirasaya
With Tokubetsu kicho (Especially precious sword) certificate no. 013707 issued by the Nihon Bijutsu Token Hozon Kyokai (The Society for the Preservation of the Japan Art Sword), dated 1981.8.8.
With kantei certificate no. 10626 issued by the Nihon Token Hozon Kai (Japan Sword Preservation Society), dated 1989.10.15.