The blade was polished.
Blade length : 73.03 cm or 28.75 inches.
Sori : 1.2 cm or 0.47 inches.
Mekugi : 1
Width at the hamachi : 3.08 cm or 1.21 inches.
Width at the Kissaki : 2.09 cm or 0.82 inches.
Kasane : 0.74 cm or 0.29 inches.
Era : Late Edo period.
Shape : The blade is wide and thick with longer kissak.
On both sides of the blade is engraved Bo-Hi.
Jitetsu : Koitame hada well grained with jinie attach.
Hamon : Niedeki gunome midare and kogunome midare mixed.
In Ha, there are many sunagashi and small kinsuji scatter.
Special feature : Naotane is top ranking sword maker in Shinshito sword ranking. This sword is not genuine Naotane.
Probably sword maker ranking Naokatsu class made this sword.
Tsuba : The iron sukashi Tsuba.
Fuchikashira : The landscape is engraved.
Saya : Black roar saya.
Menuki : Shishi dog is engraved with gold color.