This sword was made in the Koto period, originally a little longer but was shortened in later years. It is a very beautiful sword with no fatal flaws and is well preserved. The jitetsu is itame grain with mokume mixed in, and the Hoso-suguha hamon further accentuates its elegance. The tsuba, fuchigane, and menuki are original, and the tsuka-gashira is thought to have been replaced in later years. The plain tsuba, in particular, is simple but gives the sword a samurai-like appearance. Overall, this sword is well-balanced when held, and is a gem that not only has high antique value but is also powerful enough to be used for practical purposes such as Iai and Batto.

• Blade length: 75.0 cm
• Curvature: 1.8 cm
• Number of Mekugi hole: 2
• Sakihaba:  18.5 mm
• Sakikasane: 4.0 mm
• Motohaba:  30.3 mm
• Motokasane:  6.2 mm
• Signature: No signature(Mumei)
• Era: Koto
• Structure: Shinogi-zukuri, Iori-mune
• Jitetsu: Itame mixed with Mokume
• Hamon: Hoso-suguha mixed with Notare
• Boshi: Togari
• Weight(without Saya):  1,120 g
• Nakago: Suriage
• Koshirae: Tetsukon silk tsuka wrapping with kuroro lacquered saya
• Original Registration No.: Nagasaki 011287