Katana(Naginata Naoshi) in Shirasaya (13th NBTHK Juyo Paper)
Signature: Mumei (Den Yoshikage)
The blade was polished.
Blade length : 78.33 cm or 30.83 inches.
Sori : 2.1 cm or 0.82 inches.
Width at the hamachi : 3.17cm or 1.24 inches.
Width at the Kissaki :2.63 cm or 1.03 inches.
Kasane : 0.76 cm or 0.29 inches.
Era : Nanbokucho period.
Shape : Wide and thick, Ookissaki Naginata Naoshi Katana.
Jitetsu : Itame Hada Nagare. Hadatachi style. Jinie attached.
Hamon : Ko-Midare and Ginome Midare. Deep Nioikuchi.
In Ha, there are many Kinsuji and Sunagashi.
Special feature : Yoshikage was a son of the Kagemitsu and a student of the Chikakage.
His subject was influenced a lot from his father Kagemitsu especially Kataochi gunome midare hamon. There are very few Zaimei swords(with signature) .
This blade is Oosuriage Mumei, Naginata Naoshi Katana.
13th NBTHK Juyo Paper
Aoi Art estimation paper : whole Oshigata.