Previous answer is
Mumei (Mihara Masaie)

Special feature: The sword was judged as Mihara Masaie
at the NBTHK. Masaie was a founder of Mihara sword school
and called Uemon. His work is suguha hamon with sakasa Ashi.

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Appraisal Quiz #530 (March 16th, 2019)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

The blade was polished by high ranking polisher.
Habaki : gold wrapped double habaki.
Blade length :　69.5　cm or 27.36 inches.
Sori : 2.1cm or 0.82 inches.
Mekugi : 　2
Width at the hamachi : 2.88 cm or 1.13 inches.
Width at the Kissaki : 1.94 cm or 0.76 inches.
Kasane : 0.7cm or 0.27 inches.
Shape : The blade is oosuriage mumei(cut shortened).
Bo-hi is engraved on both sides of the blade.
on one sides of the Bo-hi is engraved Ken ukibori style.
Jigane :Koitame had well grained with jinie attach
and small chikei work and clear Utsuri appear.
Hamon :Nioi deck suguha with small ash scatter　Hamon.
Boshi is noter and round shape which is called sansaku Boshi.

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