Previous answer is
Hasebe Kuninobu

Special feature :
Most of the blade forged by Hasebe school were Sunnobi Tanto.
Hitatsura Hamon and Jigane is Hadatachi style and can see the texture well.
Nakago jiri is Kurijiri style.
Boshi Yakisage deep when we compare the blades with Hasebe Kunishige the first generation.
This Tanto is rather wide and slim and also having small curve which is typical Nanbokucho style Tanto.

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Appraisal Quiz #421 (January 14th, 2017)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Shape : Standard shape Katana with blade cut shorten from tang, shallow curve and long Kissaki.
Jitetsu：Itame-hada with Mokume mixed Masanagare. Chikei works well.
Hamon : Small Notare and Gunome mixed, Sunagashi, Kinsuji work well and Nie attached with some Yubashiri.

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