Signature : Mumei
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku, Jyo saku and regular saku)
This sword belongs to regular saku ranking.
The blade was polished.
Blade length : 26.4 cm or 10.39 inches.
Mekugi : 1
Width at the hamachi : 2.49 cm or 0.98 inches.
Kasane : 0.83 cm or 0.32 inches.
Era : Late Muromachi period.
Shape : It is long Kerakubi yari from early period. It is shapae of late Muromachi.
Jigane : Itame hada well grained with jinie attached. There are some rough skin.
Hamon : Maybe it is Hitatsura Fu, because some places Hamon is not visible to see.
Special feature : If you find the long Kerakubi, the blade was made before Muromachi period.
It not has Tsuka of Shirasaya.
Aoi Art estimation paper : whole Oshigata.