Tanto: Bizen Koku Ju Osafune Sukesada Saku
Tanto in Shirasaya(NBTHK Hozon Paper)
Signature : Bizen Koku Ju Osafune Sukesada Saku
Eiroku 13 nen 2 gatsu hi (February 1570)
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saku)
This Bizen Koku Ju Osafune Sukesada belongs to Jyo saku ranking.
The blade was polished.
Blade length : 24.1 cm or 9.48 inches.
Sori : 0 cm or 0 inches.
Mekugi : 2
Width at the hamachi : 2.39 cm or 0.94 inches.
Kasane : 0.71 cm or 0.27 inches.
Era : Late Muromachi period.
Shape : Thick nice shape Tanto.
Jitetsu :Itame had and mokume had mixed with jinie attach and utsuri appear.
Hamon : Nie Deki Suguha.
Special feature : Sukesada and Kiyomitsu were both working at late Muromachi
period and made accountable swords also exported Japanese swords to China and Korea.
The best quality swords is called Chumonuchi sword (Daimyo class ordered special
quality sword which were mentioned Zokumyo (real sword maker's name) and
then upper class was called Bizen Koku like this sword
and mass productive swords like Bishu Osafune .
This blade has rough part but not serious which has passed more than 440 years.
NBTHK Hozon Paper
Aoi Art estimatin paper : whole Oshigata.