Katana in Shirasaya(NBTHK Hozon Paper)
Signature : unknown (Ko Uda)
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku, Jyo saku and regular saku)
This Ko Uda belongs to Jyo saku ranking.
The blade was polished.
Habaki : Copper single habaki.
Blade length : 64.4 cm or 25.35 inches.
Sori : 1.0 cm or 0.39 inches.
Mekugi : 1
Width at the hamachi : 3.27 cm or 1.28 inches.
Width at the Kissaki : 2.99 cm or 1.17 inches.
Kasane : 0.47 cm or 0.18 inches.
Era : Nanbokucyo period.
Shape : The blade is Oosuriage mumei(cut shortened) Nagamaki style long and wide.
Jitetsu : Koitame hada and masa me hada mixed with jinie attach and soft feeling texture.
Hamon : Niedeki suguha notare with small ashi and sunagashi work. Boshi is Yakuzume style.
Special feature : The Uda school is said to have originated in Yamato province.
The founder Kunimitsu moved to Ettyu province in the last Kamakura period.
The texture of jitetsu is a point worthy of appreciation. Especially conspisious chikei appeals us strongly.
Originally this blade was a very long naginata, a kind of halberd that was one of several similar shapes used attached to a long pole.
It is also called a polearm.
The blad has passed more than 700 years so there are small kizu and flow but not serious.
If the blade will be polished again, the blade will be nice Jigane.
We recommend this nice sword for you.
NBTHK Hozon Paper
Aoi Art estimation paper : whole Oshigata.