Previous answer is
Mumei(Yamato Shizu)

Special feature:Yamato Shizu means that Shizu Kaneuji moved to shizu province with his students and before moving Shizu was called Yamato shies.　Kaneuji was well known sword maker as Masamune Jyuttetsu.
Another group moved to Naoe who were called Naoe shizu.
Generally speaking, Yamato shizu has good reputation much better than Naoe shizu.
This sword is itame hada well grained with jinie attach
with masanagare and bo-utsuri appear and Soshu style mixed and thick nioikuchi hotsure, kuichigaiba, double hamon hakikae hamon Tobiyaki and in Ha,
there are lot of activities with kinsuji, sunagasi and active boshi hamon are marvelous.
The blade is very similar like Oosizu Kaneuji.

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Appraisal Quiz #472 (January 13th, 2018)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 74.1 cm or 29.17 inches.
Sori : 1.7 cm or 0.66 inches.
Mekugi : 3
Width at the hamachi : 3.22 cm or 1.26 inches.
Width at the Kissaki : 2.57 cm or 1.01 inches.
Kasane : 0.68 cm or 0.26 inches.
Shape : Suriage Mumei Katana. Wide and thick blade with large Kissaki. There is a Bo-Hi and Soe-Hi on the blade.
Jitetsu : Itame hada and mokume hada and also koitame hada mixed with thick jinie attach chikei work.
Hamon : Niedeki Ko-Notare and Suguha mixed with thick nioikuchi and many sunagashi and Kinsuji scatter. Boshi is Togari shape.

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