Previous answer is
Mumei(Yoshikage) Naginata naoshi

Special feature : Yoshikage is said that Yoshikage is a student of the Bizen Kagemitsu.
He made huge swords dousing Nanbokucyo period.
So some blades were suruage nakago during Edo period.
This sword is Oosuriage mumei but the blade is wide and thick with ookissaki style sword.
This sword is called Soden bizrn which maens the blade was made mixed up Bizen and Sosyu school.
This sword remind us Kanemitsu or Cyogi.
The blade is active Gunome Cyoji midare and sakasa cyoji midare mixed marvelous sword.

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Appraisal Quiz #329 (February 20th, 2015)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
　
Blade length : 70.3 cm or 27.67 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 2
Width at the hamachi : 2.84 cm or 1.11 inches.
Width at the Kissaki : 2.00 cm or 0.78 inches.
Kasane : 0.67 cm or 0.26 inches.
Shape : Regular side Suriage Mumei Katana.
Jitetsu : Iitame Hada and Mokume Hada mixed and well grained
with Jinie attach and Chikei work wonderful nice texture.
There are Midare Utsuri.
Hamon : Oo-Choji and Kawazuko-Choji mixed with Togari-Ha.
There are Tobiyaki. Bright nioikuchi. There are many Sunagashi and Kinsuji in Ha. It’s very bright and beautiful Hamon.
Boshi is Midarekomi Yakizume style.

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