Ordering number: 21137
Wakizashi in Shirasaya with Koshirae.(NBTHK Tokubetsu Hozon Token)
Signature : Kato Hachiro Tsunatoshi 加藤八郎綱俊
Bunsei 4nen Kanitomi 2gatsu Kichijitsu
(We divide 4 sections for each sword as Saijyo saku, Jyo-jyo saku Jyo saku and regular
This sword belongs to Jyo Jyo Saku ranking.
The blade was polished.
Habaki : Gold foiled double Habaki.
Blade length : 35.0 cm or 13.77 inches.
Sori :0.8 cm or 0.31 inches.
Mekugi : 1
Width at the hamachi : 3.0cm or 0.11 inches.
Width at the Kissaki : 2.24 cm or 0.88 inches.
Kasane : 0.68 cm or 0.26 inches.
The weight of the sword 340 grams.
Era : Edo period around Bunsei era(1821)
Shape : Rather wide and thick small size Wakizashi.
There is a slight Ubu-Ba remains.
Jigane : Ko Itame Hada well grained. Mujifu Jigane.
Hamon : From Hamachi is Suguha and then Gunome Midare and Doranba. There are two Tama(spherical Hamon).
Boshi is round shape and Yakisage style.
Special feature: First-generation Chounsai Tsunatoshi was a younger brother of the Tsunahide.
He was born Kansei 10th at Uzen province and worked for Yonezawa family
and called Kato Hachiro. He was third son of the Kato Izumi Kami Kunihide sword maker.
He and his old brother Tsunahide moved to Edo and studied from Suishinshi Masahide
and mastered Doranba hamon and also bizen den.
Especially Tsunahide mastered Doranba hamon perfectly from his master.
He passed away on December 5th, 1822 at the age of 66.
Saya : Black color Saya with wood grain patten.
Tsuba : Iron, landscape is engraved.
Menuki : Shakudo, person is engraved with gold color.
Fuchikashira: Shakudo with gold color.
Kozuka: Shaudo Nanako, spear is engraved with silver color.
From Aoi Art: Chounsai Tsunatoshi the 1st studied umder Suishishi Masahide. In the early days, the Masahide succeeded in producing a Doranba Hamon. And he found a defect that the Doranba Hamon’s blade is easy to break. And then he made Ko Gunome Midare, Suguha and Ko Choji Midare Hamon.
However, Doranba Hamon are very popular because they are now being appreciated.
NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper: whole Oshigata.