Previous answer is
Bizen Suke Fujiwara Munetsugu Saku kore/Kaei 5nen 8gatu Kichijitsu (August1852)

Special feature : Bizen Suke Fujiwara Munetsugu was born at Kyowa 3rd(1803) Ousyu Shirakawa province and called So-Bei.
He was working for Sirakawa Matsudaira family and after that, he moved to Edo and studied under the Kato Tsunahide.
Also he worked for Kuwana family.
This sword is very similar with Cyounsai Tsunatoshi.
This sword is one of the best quality Munetsugu.

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Appraisal Quiz #294 (June 6th, 2014)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 70.0 cm or 27.55 inches.
Sori : 0.9 cm or 0.35 inches.
Mekugi : 2
Width at the hamachi : 3.09 cm or 1.21 inches.
Width at the Kissaki : 2.04 cm or 0.8 inches.
Kasane : 0.65 cm or 0.25 inches.
Hints
1:Small sori.
2:The gunome and doranba with thick nioikuchi and square shape gunome mix.
3:Yasurime and Nakagojiri. (Please check the pictures)
4:generally from the hamachi, suguha hamon and then gunome midair hamon.
5:Boshi is like head of snake.
6:This sword smith is well known cut well sword and many gold inlay saidanmei.

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