Previous answer is
Hizen koku Kawachi Daijo Fujiwara Masahiro (1st generation)

Special feature : Hizen koku Kawachi Daijo Fujiwara Masahiro was
a son of the Yoshinobu who was called Masanaga and at kanei 2nd November
he changed his name to Masahiro. He passes away at Kanbun 5th Feb, 5th age 59.
He made many swords for 2nd generation Tadahiro.
He made unusual Cumulonimbus cloud style hamon and well repotted from that period.
Even in modern times, many sword collectors collect his swords.
This blade is thick nioikuchi suguha hamon and looks first generational
of the Musashi daijyo Tadahiro. We undestand the high technique of his blade.
The sword is very healthy without Kizu and flow.
And also the blade was polished by highest ranking polisher.

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Appraisal Quiz #309 (September 19th, 2014)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 69.6 cm or 27.40 inches.
Sori : 0.9 cm or 0.35 inches.
Mekugi : 3
Width at the hamachi : 3.03 cm or 1.19 inches.
Width at the Kissaki : 2.08 cm or 0.81 inches.
Kasane : 0.69 cm or 0.27 inches.
Shape : Rather ide and thick blade.
Jitetsu : Itame Hada well grained with Jinie and Chikei work
and visible to see the texture.
Hamon : Niedeki Suguha base with double Ha.
There are Ko-Ashi. Boshi is round shape. Soft Habuchi.

-Blackish dark jigane
-Crest is engraved.
-Suguha with mixture of notare.
-Jigane has clear hada pattern and chikei is seen.
-There is shallow sori.

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