Previous answer is
Mumei (Rai Kunimitsu)
Special feature : Rai Kunimitsu was a son or a pupil of Rai Kunitoshi in Yamashiro province.
He made the blade which is traditional Yamashiro Suguha, Suguha base with Ko-Gumono Midare or Ko-Choji Midare
and Gunome Midare. He made various types of Hamon.
This blade is calm Suguha with deep Nioikuchi. In Ha, there are many Ashi and Yo.
This blade is elegant. It is hardly to find this kind of Saijosaku blade.
Appraisal Quiz #371 (January 22nd, 2016)
Who made this sword do you think ?
Hints. ※The picture will be enlarged
Blade length : 71.81 cm or 28.27 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 1
Width at the hamachi : 3.03 cm or 1.19 inches.
Width at the Kissaki : 2.31 cm or 5.86 inches.
Kasane : 0.87 cm or 0.34 inches.
Shape : Wide and thick blade with Sori.
Jitetsu : Ko-Itame Hada well grained with Jinie attach.
This Jigane is typical beautiful Hizen blade which called Konuka-Hada.
Hamon : Nie Deki, Suguha with deep Nioikuchi. Boshi is round shape.
Answer will be posted at next Appraisal Quiz.