Attributed to Bizen Kanemitsu, Kamakura period (1185-1333) or Nanbokucho era (1333-1392), circa 1330-1340 Sugata (configuration): honzukuri, iorimune, chu-gissaki, slight sakizori with a wide mihaba and thick kasane Kitae (forging pattern): tightly packed ko-itame mixed with some mokume based in nie Hamon (tempering pattern): choji midare mixed with gunome midare tapering to a gentle notare toward the tip in nie and nioi with ashi, saka-ashi, tobiyaki, ko-choji and utsuri throughout Boshi (tip): midare komi Horimono (carving): bohi on both sides Nakago (tang): o-suriage with later file marks and four holes, one cut, and tachi mei Bizen Osafune no ju Kane[] (truncated signature) Habaki (collar): two-piece gold Nagasa (length from tip to beginning of tang): 29 7/8in (75.8cm) long Motohaba (width at start of tempered edge): 1 1/4in (3.2cm) wide Sakihaba (width before tip): 1in (2.5cm) wide In shirasaya (wood storage scabbard) with attestation and valuation by Hon'ami Kojo and dated Kanbun nana nen (1667)