The blade was polished.
Blade length : 68.6 cm or 27.00 inches.
Sori : 1.5 cm or 0.59 inches.
Mekugi : 3
Width at the hamachi : 2.80 cm or 1.10 inches.
Width at the Kissaki : 1.93 cm or 0.75 inches.
Kasane : 0.63 cm or 0.24 inches.
Era : Late Muromachi period.
Shape : It is cut shorten 9cm there are some moving up in the ha.
Jitetsu : Itame hada well grained with jinie attached. There are chikei mixed.
Hamon : Nie base gunome mix with choji mixture. There are some sunagashi and slight kinsuji works.
Boushi is irregular line and the Muneyaki is seen.
Special feature : This piece is late Muromachi period shape. From the jigane and hamon, it could be said as Taira Takada piece.
The jigane is fine and hamon is gorgeous.
There is a sayagki of Fukunaga Touken sensei sayagaki.
Aoi Art estimation paper : whole Oshigata.