Previous answer is
Aoi-mon Yasutsugu oite Echizen kore.(3rd generation. Echizen province.)

Special feature : Echizen Yasutsugu is swordsmith of Mino Asakasa Senjuin descent.
He moved to Echizen from Omi in late Muromachi period. Keicho 18(1613),
he served Tokugawa Ieyasu Shogunate and was allowed to engrave the Aoi family crest.
This blade was made by Yasutsugu 3rd. This Jigane　has distinctive Chikei. We think perhaps he used the Nanban-Iron.

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Appraisal Quiz #310 (September 26th, 2014)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 69.9 cm or 27.5 inches.
Sori : 1.7 cm or 0.66 inches.
Mekugi : 2
Width at the hamachi : 3.16 cm or 1.24 inches.
Width at the Kissaki : 2.10 cm or 0.82 inches.
Kasane : 0.71 cm or 0.27 inches.
Shape : It is wide and thick nice sori katana with
Jitetsu : Koitame hada well grained with jinie attached.
There is floating masa pattern. fine chike is attached.
Hamon : There is wide burn pattern and it is mainly choji midare
with mixture of gunome midare.
Some togari gunome midare is flamboyantly mixed.
Ashi yo is active and sunagashi, kinsuji works are seen.
There are deep yaki around the hakikake area of the boshi.

Who is this sword smith
Clues
1. It is Ubu work. There is slight sori. Kissaki is long ended.
2. It is gorgeous choji midare with utsuri appearing.
3. JIgane is itame hada with mixture of masa.

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