Previous answer is
Fukuoka Ichimonji (Osuriage Mumei)
Special feature : Fukuoka Ichimonji school is known to made the most brilliant Hamon blades in entire Ichimonji schools.
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Appraisal Quiz #412 (November 5th, 2016)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
1 : Kesho Yasuri.
2 : Please take a look to the shape of Nakago carefully.
3 : Hamon is Doranba but small size Gunome-midare with deep Nioikuchi.
4 : Sori (curve) is shallow.
5 : Boshi turns round shape.
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