Previous answer is
　 Mumei (Senjuin)
無銘(千手院)　

Special feature:At the foot of Mt. Wakakusa in Nara, there is a Senju-do that enshrines Senju Kannon.
Probably it was made for the monk soldiers of the temple, and it is thought that the inscription was not put on the stem,
and there are very few sword inscriptions of other Yamato schools.

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Appraisal Quiz #658 (September 18th, 2021)
Who made this sword do you think ?
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Blade length : 51.4 cm or 2.236inches.
Sori :0.6 cm or 0.236 inches.
Mekugi : 2
Width at the hamachi : 2.68cm or 1.055 inches.
Width at the Kissaki : 1.73cm or 0.68 inches.
Kasane : 0.49cm or 0.193 inches.
The weight of the sword 370 grams.
Shape : Wide and thick and suitable Sori with longer Kissaki. On both sides of the blade engraved bohi .
Jigane: Koitame and komokume hada mixed with jinie attach and small chikei work
Hamon :Konie deki kogunome midare and gunome midare mixed. from　Monouchi area, deep nioikuchi active hamon well worked,
Bo-shi is shallow notare hamon turns back komaru bo-shi.

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