Katana in Koshirae (NBTHK Tokubetsu Hozon paper)
Signature : Ichikawa Jinojo Kyu Bizen Suke Munetsugu Saku kore
Koka 3 nen 2 gatsu hi Oite Senju Taitai Dodan barai Kitte Yamada Gosaburo
Explanation: Bizen Suke Munetsugumade this blade.
Mr. Yamada Gosaburo did scutting test (both shoulders line) in February 1846 at Edo city.
The blade was polished.
Blade length : 76.14 cm or 29.97 inches.
Sori : 1.8 cm or 0.70 inches.
Width at the hamachi : 2.92 cm or 1.14 inches.
Width at the Kissaki : 1.89 cm or 0.74 inches.
Kasane : 0.73 cm or 0.28 inches.
Era : Edo period around Koka era (1846).
Shape : Regular size blade with large sori nice looking shape.
There are Bo-Hi on both side.
Jitetsu : Koitame hada well grained with jinie attach beautiful texture.
And visible to see the texture.
Hamon : Nioideki gunome midare and Cyoji midare mixed
with Ashi and deep nioikuchi hamon.
Boshi is Midarekomi round shape with a constriction.
Special feature : First generation Bizen no suke Munetsugu (Koyama Munetugu)
was born at Mutsu Shirakawa province as a son of Koyama Munehira.
His name was Soubei.
He was working for Matudaira Daimyo family as a sword making Samurai.
He moved to Kuwana province with his master and then he moved to
Edo at Tenpo 2 nd year.At that time he was high reputation of cut well
Some times we found his swords which was done Saidanmei and also possession name on the tang of the blade.
Generally speaking the quality of Munetsugu is one of the top sword
smith in late Edo period and without any faults among his swords.
He passed away Meiji 5th year 70years of age.
The blade of Koka era which Hamon is calm. This is very precious and nice cutting test blade.
Tsuba : Signature: Tadatsugu. Rouns shape iron Tsuba.
Fuchikashira : Shakudo, family crest is engraved with gold color.
Saya : Black Ishime-Ji Saya.
Menuki : Shakudo, carp is engraved.
NBTHK Tokubetsu Hozon paper
Aoi Art estimation paper : whole Oshigata.