Shinto:Cyujyosaku ranking:Ise province.
The blade was polished.
Habaki : Gold sigle foiled habaki.
Blade length : 33.63 cm or 13.24 inches.
Sori : 0.3 cm or 0.11 inches.
Mekugi : 2
Width at the hamachi : 1.90cm or 0.74 inches.
Kasane : 0.50 cm or 0.19 inches.
Era : Early Edo period.
Shape : The blade is a little longer Sunnobi tanto.
Jitetsu : Itame had and mokume had mixed with jinie attach nice blackish jigane.
Hamon : From Hamachi area, suguha and then notare gunome midair mixed nd same hamon on the front and back.
Boshi : Round shape yakisage long.
Special feature : Seishu Ju Sengo Masashige is Muramasa school.
Masashige is a student of the Muramasa and this sword is probably 3rd generation Masashige.
The hamon both side is almost same hamon.
Nakago shape is almost as sama as Muramasa.
The Jigane and Hamon both nice work and good condition.
We recommend this sword which is Muramasa school sword.
NBTHK Hozon paper
Aoi Art estimation paper : whole Oshigata.