Ordering number : 15588
Katana in Shirasaya (23th NBTHK Juyo Paper)
Signature : Tame Otsuka Kazunobu Kun Sekido Unju Korekazu Seitan saku kore
Ansei 5 nen Inu Uma 2 gatsu hi (February 1858)
Sayagaki: Seikido Unju Korekazu Ansei Tsuchinoe-Uma, blade length 75.6cm, Showa Kinoto-U Satsuki (May 1975)
written by Dr.Kunzan
The blade was polished
Blade length : 75.6 cm or 29.76 inches.
Sori : 1.3 cm or 0.51 inches.
Mekugi : 1
Width at the hamachi : 2.91 cm or 1.14 inches.
Width at the Kissaki : 2.07 cm or 0.81 inches.
Kasane : 0.88 cm or 0.34 inches.
Era : Edo period, around Ansei era 1858.
Shape : Regular width, thick long blade. There are Bo-Hi on both side. Ubu Nakago.
Jitetsu : Ko-Itame Hada well grained with Jinie attached.
There Ohada around Habaki era.
Hamon : Nie Deki, Gunome Midare and Choji Midare mixed, deep Nioukuchi.
There are Sunagashi. Boshi is Ko-maru around shape.
Special feature : Sekido Korekazu was born as a nephew of Kato Chounsai Tsunatoshi,
learned from him and he succeeded the Ishido family as the seventh generation,
he passed away in 1894 aged 75.
He made Sodenbizen den which is convined with Bizen and Sosty den style.
First generation Korekazu made Bizenden style with nice Utsuri but 7th generation Korekazu made swords like Sosyu style.
This sword was made meiji 2nd year but at that time, demanding Japanese swords are very few.
Meiji Government decided to prohibit to make Japanese swords.
A lot of sword makers gave up his job.
Blade : #23th NBTHK Juyo Paper
Aoi Art estimation paper : whole Oshigata.