Previous answer is
Mumei (Unji)

Special feature : Unji was swordsmith at Bizen province in about Bunpo era.(about 1317.)
It is said that he was a little brother of Unsho.
His blade has more textured Jitetsu than Osafune school.
And some his blades are similar to Rai school in Yamashiro province.
According to old commentaries, he passed away about Ko-ei era.(about 1342) aged about 70.

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Appraisal Quiz #255 (August 16th, 2013)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 71.3 cm or 28.07 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 2
Width at the hamachi : 3.23 cm or 1.27 inches.
Width at the Kissaki : 2.33 cm or 0.91 inches.
Kasane : 0.73 cm or 0.28 inches.
Shape : wide and thick with Sori, this is healthy blade. Kissaki is long.
Jitetsu : Koitame hada well grained with Jinie attach. Mujifu.
Hamon : Nie deki Ko-gunome midare. there are Ashi and soft Nioikuchi.
It looks like Yoshii Bizen blade.

Hints:
1. Wide and thick blade.
2. Jitetsu is Mujifu.
3. uniform　Ko-gunome midare. There are Utsuri.
4. Boshi is Midarekomi style.

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