Previous answer is
　Mumei(judged as Katayama Ichimonji)
無銘(片山一文字)

Special feature: We call the swordsmith clan “Katayama Ichimonji” because Norifusa from Fukuoka Ichimonji school moved to Katayama. It is said that we have generations of Norifusa because we have many types of writing of Mei and styles of making swords. Originally, Katayama is regarded as Bicchu, but recently, some claim that Katayama had to be near Bizen Fukuoka. Their characteristics are strong and bright Jigane and smaller Chojimidare with small particles of Ashi in Ha.

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Appraisal Quiz #744 (May 27th, 2023)
Who made this sword do you think ?
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Blade length : 27.5cm or 10.827 inches.
Sori : 0.0cm or inches.
Mekugi : 1
Width at the hamachi :2.31 cm or 0,91 inches.
Width at the Kissaki : cm or nches.
Kasane : 0.45cm or 0.178 inches.
The weight of the sword 150 grams
Shape : The width of the body and the overlapping Nakago are a work that expresses the appearance which is said to be a Tanago Bara.
Jigane :Jitetsu: It is a unique Jitetsu that has a black tinge and a heathered surface mixed with the cross grain.
Hamon: Hamon on the front and back are completely aligned.

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Answer will be posted at next Appraisal Quiz.

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