AS21093-KatanaMumei(Sue Sa, O-Sa school)

Katana in Shirasaya(NBTHK Tokubetsu Hozon Token)
Signature:　Mumei(Sue Sa, O-Sa school)

(We divide 4 sections for each sword as Saijyo saku, Jyo-jyo saku Jyo saku and regular saku)
This sword belongs to Saijo saku ranking.
The blade was polished.
Habaki:　Gold foiled single habaki.
Blade length:　75.6　cm or 29.76 inches.
Sori : 1.4 cm or 0.55 inches.
Mekugi: 　2
Width at the hamachi: 3.16 cm or 1.24 inches.
Width at the Kissaki: 2.13 cm or 0.83 inches.
Kasane : 0.77 cm or 0.30 inches.
The weight of the sword 775 grams.
Era : Nanbokucho period Ennui, Kyuji era.1356
Shape: O-suriage Mumei (cut shortened) and engraved double hi. The blade is wide and thick with rather deep sori and long Kissaki which remind us Nanbokucyo period.
Jigane: Koitamehada and Komokume hada mixed well grained with Jinie attach beautiful fine texture and Utsuri appear.
Hamon: Koniedeki Suguha base and Notare mixed wire many small Ashi ,Some part became deep Nioikchi. In Hamon, Sunagashi, Kinsuji work. Bo-shi is Yakizume style right side is double Hamon and then Yakizume.
special feature: In the early part of the Nanbokucho period, Samonji of Chikuzen Koku appeared and introduced Sosyu-den, which was not seen in Kyushu until then, and established a bright and clear style with a blade of active temper line In addition, the Swordsmiths of this group also prospered greatly due to the master’s style. The Swordsmiths under their control include Yasuyoshi, Yukihiro, Kunihiro, Yoshisada, Hiroyuki, Hiroyasu, Sadayoshi, etc., and these Swordsmiths are called Suesa. The style is based on the master Samonji, who insists on a beautiful stimulate Jigane blade with active Hamon, and Bo-shi is often pushed up and turns back sharply.

From Aoi Art: This sword has slightly wider and is in the shape 　
of Nanbokucho era with Kissaki’s extension, and in particular, the 　
colors of the times of Enbun and Jyoji are well displayed. The Hamon has a lot of small ashi in suguha based, and there is more work in the blade from the Monouchi area. Bo-shi represents the blade 　pattern, which is sharp and does not return. It is also preferable that the work shows the characteristics of Suesa and is powerful and healthy. The fine Jigane and Hamon are works that you will never get Kunihiro. There are Yoshisada, Hiroyuki, Koan, and Sadakichi, but no one can be identified. There is no doubt that he is a very highly regarded swordsmith.
We recommend this sword for you.

NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper
whole Oshigata.