Wakizashi in Shirasaya (NBTHK Tokubetsu Hozon Paper) Fujishiro Kanteisho paper.

Signature: Bishu Osafune Tadamitsu

Blade length : 56.8 cm or 22.36 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi: 3
Width at the hamachi : 2.97 cm or 1.16 inches.
Width at the Kissaki : 1.9 cm or 0.74 inches.
Kasane : 0.67 cm or 0.26 inches.
Era : Late Muromachi period.
Shape : Width and thickness are average, and the blade shape is highly curved.
Jitetsu : Ko-itame hada and Masame mixed, covered in Jinie.
There are some rough skin parts. There is Utsuri.
Hamon : Ko-nie based, Chu-Suguha. Nioikuchi is slim.
Boshi is small round shaped Kaeri style.

Special feature : The founder of Bishu Osafune Tadamitsu was in Nanbokucho period.
And they made many swords in middle Muromachi period, and late Muromachi period on demand.
They made Suguha Hamon mainly.

This blade has some rough skin parts, but the blade shape is very nice with deep Sori.
There is Ume-gane around 20cm part from Habaki , on the Sashi-ura side.

NBTHK Tokubetsu Hozon Paper
Fujishiro Kanteisho paper
Aoi Art estimation paper : whole Oshigata.