The blade was polished.
Blade length : 33.6cm or inches.
Sori : 0.2cm or inches.
Width at the hamachi : 3.1cm or inches.
Kasane : 0.83cm or inches.
Era :Late Muromachi period.
Shape : It is rather wide and thick sunnobi tanto
Jitetsu :item hada flowing. Shirake utsuri can be observed.
Hamon : Nie base suguha with ash.
Special feature : From the look, it seems to be late Muromachi period piece.
Aoi Art estimation paper : whole Oshigata.
Price : 50,000JPY (including shipping and 100% insurance fee)