Previous answer is
Mumei Naoe Shizu
Special feature :
Naoe Shizu school is a group of a smiths with the founder ‘Kaneuji’, who was one of 10 students of Masamune. They moved to Naoe from Sizu, Mino province.
The blade remaining signature on stem are very rare and most of them became Mumei by O-suriage.
The blade is Nagare mixed Kitae with Gunome-midare Sunagashi work strongly and we can see characteristics of Naoe Shizu from both Hamon and Jitetsu.
Hamon becomes similar to Masamune.
This Soshu-den style blade has beautiful Jitetsu and good work done by high ranking polisher.
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Appraisal Quiz #422 (January 21th, 2017)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
1 : Koitame hada well grained with Jinie attach beautiful texture.
2 : Konie-deki deep Nioikuchi Gunome-midare and Choji-midare mixed with Sunagashi and Kinsuji work active.
3 : Boshi turns round shape.
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