Katana in Shirasaya (#15th NBTHK Juyo paper)
Signature : Mumei(unsigned) attributed as Naoe Shizu.
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This Naoe Shizu belongs to Saijyo saku ranking.
The blade was polished by high ranking polisher.
Blade length : 71.2 cm or 28.03 inches.
Sori : 1.4 cm or 0.55 inches.
Mekugi : 2
Width at the hamachi : 2.89 cm or 1.13 inches.
Width at the Kissaki : 1.93 cm or 0.70 inches
Kasane : 0.64 cm or 0.25 inches.
Era : Nanbokucyo period.
Shape : The blade is oosuriage mumei(cut shortened) with double hi on both sides of the blade.
Jitetsu : Itame hada well grained and ooitame hada mixed with Jinie and chikei attach.
Hamon : Niedeki with thick nioikuchi gunome midare and notare mix.
In hamon, there are many sunagashi, Kinsuji scatter.
Boshi is double hamon yakizume style.
Special feature : This sword was reported as Nasamune before and also Honami judje issued as Masamune at Syowa 32nd(19567).
But NBTHK issued as Naoe shizu Jyuyo Token.
Kaneuji studied from Masamune and educated many sword makers.
His descendants moved to Naoe province and made many swords at Nanbokucyo period.
This blade looks Ooshizu not Naoe shizu.
The blade has Ooitame hada with active chikei remind us Sadamune.
The sword is very high ranking Sosyu-den.
We recommend this active wildish sword.
#15th NBTHK Juyo paper
Aoi Art estimation paper : whole Oshigata.