Tanto : Taira Ason Nobuhide
Tanto in Shirasaya with Koshirae(Fujishiro estimation paper)
Signature : Taira Ason Nobuhide
The blade was polished.
Habaki：Silver single habaki.
Blade length : 15.0 cm or 5.9 inches.
Mekugi : 1
Width at the hamachi : 2.16 cm or 0.85 inches.
Kasane : 0.47 cm or 0.18 inches.
Era : Late Edo period.
Shape : The blade is rather short and healthy blade.
Jitetsu : Itame had well grained with jinie attach and small chikei work.
Hamon : Niedeki gunome midair with ash,sunagashi and also small kinsuji work.
Special feature : Nobuhide was born at 12th Bunka era and made mirrors but later on he studied sword making from Kiyomaro.
His swords are similar with his master but he has skillful to make Toshibori(engrave on the sword).
I think Kiyomaro is making just only cut well sword only but Nobuhide tried to make Toshinbori.
Probably he went out from Kiyomaro school and made sword by himself.
After that he made a lot of swords with hormone(toshinbori)
His skillful had well reputation from many sword collectors.
He made sword until around Meiji 10th both sword and mirror.
Koshirae : Aikuchi koshirae.
Saya : Black roar saya.
Menuki : On the syakudo plate, engraved Fujin and Raijin(god of the wind and god of thunder) which is humorous face.
Kanteisyo:Fujishiro human national treasure Kanteisyo.
Aoi Art estimation paper : whole Oshigata.