Previous answer is
Mumei (Ko Aoe)
Special feature: The beginning of Bicchyu Aoe was Yasutsugu in Heian period Syoan era,
and had produced many great swordsmiths until late Nanbokucho period.
Aoe before mid Kamakura period is called Koaoe. Representative swordsmiths of Koaoe such as moritsugu,
tametsugu, sadatsugu had the common letter “次” in their names.
This work really has characteristics of Koaoe in this shape, jigane and hamon.
A little yubasiri of yakigashira in the blade is classical elegant. Though it is Oosuriage,
the shape with deep sori in hamachi still retains characteristics of swords
from the late Heian period to the early Kamakura period.
Appraisal Quiz #591 ( May 30th, 2020)
Who made this sword do you think ?
Blade length : 76.3cm or 30.04inches.
Sori : 2.3cm or 0.91 inches.
Mekugi : 1
Width at the hamachi : 3.5cm or 1.38 inches.
Width at the Kissaki : 2.3 cm or0.91 inches.
Kasane :0.8 cm or 0.315 inches.
The weight of the sword 1105 grams.
Shape : The blade is long , wide and thick
with deep sori and long Kissaki heavy blade(1,105 grams)
Jigane :Koitame hada well grained with jinie attach and a lot of chikei work.
Shinogi ji: Koitame and mokume hada.
Hamon :Niedeki suguha, uchinoke and double hamon and sunagashi,
kinsuji work in Hamon.
Bo-shi is emoter side is Yakizume style with kinsuji along with hamon.
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