Previous answer is
Mumei (Yamato Shizu)
無銘（大和志津）
Special feature: Yamato Shizu refers to the work before Kaneuji lived in Noshu Mino-gun Shizu, that is, the time when he was named Kaneuji.
Even after he moved to Mino, there was a person who gave the name of Kaneuji to Yamato, and in a broad sense, this is also called Yamato Shizu.
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Appraisal Quiz #657 (September 11th, 2021)
Who made this sword do you think ?
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Blade length : 72.4 cm or 28.50 inches.
Sori :2.6cm or 1.02 inches.
Mekugi : 3
Width at the hamachi : 2.9cm or 1.14 inches.
Width at the Kissaki : 1.6 cm or 0.62 inches.
Kasane : 0.6cm or 0.23 inches.
The weight of the sword: 535grams.
Shape : The blade i rather slender with deep sori (2.9cm )
and middle Kissaki nice elegant shape.
Jigane :Koitame hada well grained like Muji style
and another part is O-hada appear and Utsuri appear.
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