Katana in Shirasaya(46th NBTHK Juyo Paper)
Signature: Oumi Kami Hojoji Tachibana Masahiro (first generation)
Shinto :Josaku Wazamono ranking.
The blade was polished.
Blade length : 76.2 cm or 30 inches.
Sori : 1.4cm or 0.55 inches.
Width at the hamachi : 3.06cm or 1.20 inches.
Width at the Kissaki : 2.17cm or 0.85 inches.
Kasane :0.66 cm or 0.25 inches.
Weight of only blade:826 grams.
Era : Edo Kanbun period.
Shape : The blade is long and thick with suitable sori and middle kissaki nice looking shape.
Jitetsu :Koitame had and mokume had mixed with thick nioikuchi
and a lot of Jinie attach. On the Ji, small chikei appear.
Hamon : Niedeki suguha with thick nioikuchi base and gunome midair with soft ash scatter.
In Hamon, there are many sunagashi work and yubashiro appear.
Boshi is round shape like Kotetsu style.
Special feature : This sword belongs to first generation Masahiro which is thick nioikuchi suguha
and gunome midair with a lot of sunagashi and small kinsuji work.
The blade is bright and clear like Kotetu sword.
The sword quality id as same as Kotetsu.
Probably Masahiro must be close relationship between Kottsu.
The hamon is not different from Kotetsu at all.
We strongly recommend this powerful feeling Masahiro.
Historical background: At Kanbun era, demanding sword became small market.
So many nice sword makers competed each others .
At Edo Masahiro and Kotetsu contrivance struck sword to the enemy which is called right now Kanbun style.
this struck sword to the enemy wear welcomed by Samurai and spread all over japan.
I think Masahiro taught the sword technique to Kotetsu because Kotetsu was a Kabuto maker.
He changed his business from Kabuto maker to sword maker.
Many samurai reduced asking to make Yoroi and Kabuto because main war finished and governed Edo
by Tokugawa shogun. We strangle recommend this nice Juyo token.
46th NBTHK Juyo Paper
Aoi Art estimation paper : whole Oshigata.