Previous answer is
Mumei(Den Ryumon Nobuyoshi)

Special feature : Ryumon Nobuyoshi is a sword smith of Yamato school and has
descended the skill of Yamato Senjyuin.
The Yamato style katana hasjvery fine jigane of Kamakura period and the jigane
of is strikingly good as the Tegai Sukenaga. At a glance, this katana is extremely similar to that
of Tegai Sukenaga and the Utsuri is excellent work.
It is fine work with no Kizu or flaw. We recommend this wonderful work.

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Appraisal Quiz #328 (February 13th, 2015)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
　
Blade length : 69.5 cm or 27.36 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi :2
Width at the hamachi : 3.24 cm or 1.27 inches.
Width at the Kissaki : 2.72 cm or 1.07 inches.
Kasane : 0.76 cm or 0.29 inches.
Shape : The blade is oosuriage mumei(cut shortened)
with wide (3.24cm) and long kissaki gorgeous nice attractive shape.
On the front a fat shindig hi is engraved kakinagashi style.
On the back, narrow shindig hi is engraved kakinagashi style.
Jitetsu :Itame had and mokume had mixed
with jinie attach and midair utsuri appear.
Hamon : Niedeki cyoji midare, gunome midare and also sakasa cyoji midare work. Boshi is midarekomi nad Yakizume style.

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