Previous answer is
Tegarayama Kai Kami Masashige.
手柄山甲斐守正繁
Special Features: Also known as Ichi-no-jō, the eldest son of the first generationTegarayama Kainokami Masashige.
Later became a monk named Kōetsu. Passed away on February 15th of the 3rd year of Shōhō.
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Appraisal Quiz #757 (August 26th, 2023)
Who made this sword do you think ?
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Blade length : 21.9 cm or 8.62 inches.
Sori : 0.0 cm or 0.0 inches.
Mekugi : 2
Width at the hamachi : 1.95 cm or 0.76 inches.
Kasane : 0.53 cm or 0.20 inches.
Shape : regular size nice shape Tanto
Jitetsu :Koitame hada well grained with mixture of mokume. Chikei attached.
It is clear jigane. There are faint utsuri.
Hamon : Niedeki suguha with koashi soft with soft nioikuchi.
Boshi is round shape.
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