The blade was polished.
Habaki: copper habaki.
Blade length : 23.0 cm or 9.05 inches.
Sori : 0 cm or 0 inches.
Mekugi : 2
Width at the hamachi : 2.36 cm or 0.92 inches.
Kasane : 0.46 cm or 0.18 inches.
Era : Late Edo period.
Shape : Syobu zukuri style.
Jitetsu :Itame had well grained masa nagger.
Hamon : Niedeki gunome midare hamon.
Special feature : The signature is mentioned only Saku and erased by the Mekugiana.
Probably Munehira saku.
Koshirae : red color Koshirae.
NTHK estimation paper (by Miyano)
Aoi Art estimation paper : whole Oshigata.