Previous answer is
Bizen Sukeyori

Special feature : Bizen Sukeyori was present in Kobizen Kencho, Fukuoka Ichimonji and Bicchu. On the surface, this blade look conspicuously like Ko Aoe. There is signature"Bizen", we also guess the Sukeyori of Fukuoka Ichimonji.　Hamon is deep Nioikuchi Gunome Midare. It is a regal looking blade. This Sinogiji is a little bit rough for a reason of shaving the Shinogiji.
On the Ji, there are Midare Utsuri visibly.　It is rare that there is signature.　We recommend this blade very much.

==============================================
Appraisal Quiz #335 (April 3th, 2015)
Who made this sword do you think ?
==============================================

Hints. ※The picture will be enlarged

Blade length : 26.96 cm or 10.61 inches.
Sori : 0.15 cm or 0.05 inches.
Mekugi :
Width at the hamachi : 2.94 cm or 1.15 inches.
Kasane : 0.61 cm or 0.24 inches.
Shape : Wide Hiratsukuri Tanto. Ubu Nakago.
There are Gomabashi, Koshi-Hi and Soe-Hi.
Jitetsu : Itame Hada well grained with Jinie attach. There are Shirake Utsuri.
Hamon : Gunome Midare. There are many Sunagashi.
Boshi is Midarekomi, Togari gokoro shape.

================================================

Answer will be posted at next Appraisal Quiz.

================================================

(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)