Katana in Shirasaya(NBTHK Tokubetsu Hozon paper)
Signature : Mumei (Unsigned) (Den Bizen Tsunehiro)
The blade was polished.
Blade length : 70.30 cm or 27.67 inches.
Sori : 1.65 cm or 0.64 inches.
Mekugi : 1 half
Width at the hamachi : 2.94 cm or 1.15 inches.
Width at the Kissaki : 1.71 cm or 0.67 inches.
Kasane : 0.69 cm or 0.27 inches.
Era : Nanbokucyo period 635 years ago.
Shape : Oosuriage mumei . the blade is rather wide and thick with deep sori nice looking shape.
Jitetsu : Koitame hada well grained with jinie attach beautiful texture and Utsuru appear.
Hamon : Nie deki gunone midare cyoji midasre mixed.
Special feature : The founder of the Tsunehiro was working at Late Kamakura period and this wordsmith belonged to 2nd generation.
He was a student of the Cyogi so the Jigane and Hamon is similar atmosphere.
NBTHK Tokubetsu Hozon paper
Aoi Art estimation paper : whole Oshigata.