Katana in Shirasaya, with Koshirae.(NBTHK Hozon Paper)
Signature: Kazusanosuke Fujiwara Kaneshige
The blade was polished.
Blade length : 67.6 cm or 26.61 inches.
Sori : 1.6 cm or 0.62 inches.
Width at the hamachi : 3.15 cm or 1.24 inches.
Width at the Kissaki : 1.93 cm or 0.75 inches.
Kasane : 0.67 cm or 0.26 inches.
Era : Edo period.
Shape : Suriage pieces and at the back end of the tang, there is a signature “Jyousoukai Fujiwara Kaneshige” written. Bohi is engraved at both side of the blade.
Jitetsu : Itame hada well grained with jinie attached. There are delicate chikei seen
and it has very strong feeling.
Hamon : NIe based gonome mix with round shape. There are sunagashi and kinsuji seen. Boshi is curved and has round kaeri.
Special feature : Jousoukai Fujiwara Kaneshige is Izuminokami Kaneshige’s son and he is called Tsuji Sukezaimon.
He is the mentor of Kotetsu and he made deep nioiguchi jyuzuha pieces.
It has very active kinsuji and sunagashi works. The hamon in the boshi reminds of Mamushi（viper) neck it is softly curled over.
Kotetsu is reigned for its unique making of which was influenced from Izuminokami Kaneshige.
Miyoshi Nagamichi was strongly influenced by his piece. His pieces shows the influence of kotetsu.
It is said that it was Toudou Hirasuke’s(one of the member of Shinsengumi) blade.
This piece is precisely been imitating kotetsu.
Tsuba :Round shape iron tsuba with openwork.
Fuchikashira :tetsu base with dragon engraved.
Saya : Black color that reminds of Awaho.
Menuki : Shakudou base with dragon engraved.
NBTHK Hozon Paper
Aoi Art estimation paper : whole Oshigata.