The blade was polished.
Blade length : 60.0 cm or 23.62 inches.
Sori : 0.8 cm or 0.31 inches.
Mekugi: 1
Width at the hamachi : 4.35 cm or 1.71 inches.
Width at the Kissaki : 3.65 cm or 1.43 inches.
Kasane : 0.53 cm or 0.20 inches.
Era : Late Muromachi period.
Shape : 4.35cm wide and sort of thin blade.
Kissaki is long, Osuriage Mumei Katana.
Jitetsu : Itamehada well grained with Jinie attach.
Hamon : Nie deki Gonome midare mix Togari Gunome with deep Nioikuchi.
Boshi is round shape style.
Special feature : Tsunahiro of earliest ancestor started from Nanbokucho period to late muromachi period and Edo period. This blade was made around late Muromachi period or early Edo period. 4.35cm wide blade. We are overwhelmed with this blade.
NTHK estimation paper
Aoi Art estimation paper : whole Oshigata.
