[ Feature ]
Form : Shinogi-zukuri. Iori-mune. Both mihaba and kasane are ordinal. There are some diffrences between moto-haba and saki-haba. Relatively high sori and saki-zori attached. Chu-kissaki form.
Nakago : O-suri-age. Yasurimes are katte-sagari. Saki is kiri. Two holes.
Engraving : Both on front omote and back ura, theare bo-his.
Jigane : Itame-hada with some changes. A little grained patterns come to be appeared. Jinie attached. Shirake covered the sword on the whole.
Hamon : Ko-notare, gunome-midares which patterns becoming sharp top. Ko-ashis appeared. Nie attached well. Kin-sens and sunagashis appeared.
Boushi : It shows midare-komi form. Kin-sens mixed. It turns in ko-maru form.

[ Highlight ] The Mino Senjuin school emerged when swordsmiths of the Senjuin school in Yamato Province moved to Akasaka, Fuwa-gun, Mino Province, close to the Todaiji manor of Oi-sou. It flourished until the Muromachi period (1393-1573), following Kunishige in the Kemmu period and Kuniyuki in the Nanbokucho period (1331-1392). Nagahiro is a member of the Mino Senjuin school of swordsmiths, and made his swords in the same area around the middle of the Muromachi period. This sword has a deep curvature, even after being polished, and the Yamato temperament can be seen in the way the sword is mainly made of even patterns with frequent kin-sen and sunagashi, and the boushi is beautifully preserved.

[ Conditions ] Excellent.