Previous answer is
Mumei(judged as Hoju)
無銘（宝寿）
Special feature: It is judged as Hoju and passed NBTHK Tokubetsu Hozon Token. They made swords originally in Mutsu Province(present Aomori, Iwate, and Miyagi prefecture) in Tohoku region, from the Heian period to the early Muromachi period. They were called as Oushu Kaji. Hoju was one of the school from people called Maikusa. They influenced lots of swordsmiths and Ko Hoki school is said to be strongly influenced among them.
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Appraisal Quiz #709 (September 17th, 2022)
Who made this sword do you think ?
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Blade length : 70.33cm or 27.68 inches.
Sori :1.36 cm or 0.53 inches.
Mekugi : 1
Width at the hamachi : 3.21cm or 1.26 inches.
Width at the Kissaki :3.21 cm or 1.26 inches.
Kasane : 0.63 cm or 0.24 inches.
The weight of the sword 715 grams
Shape : Wide and thick Katana with nice Sori, longer Kissaki.
Jigane : Ko Itame Hada well grained with Jinie attach.
Hamon : Nie Deki, there are double Hamon and Gunome Midara.
The Boshi is round shape and double Ha.
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