Previous answer is
Ishido(Sekido) Korekazu Seitan Saku Kore/Bunkyu 1　nen 8 gatsu hi

Special feature: Ishido(Sekido) Korekazu was called Seitaro nephew　
of the Kato Cyounsai Tsunattoshi and learned a lot from Tsunatoshi.
After that he got married with 6 generation Ishido Korekazu's
daughter.（ son-in-law） and succeeded 7th generation.　
He passed away at Meiji 24th age 75.
He made many swords during his life from late Tenpo era to Meiji first.
He generally koniedeki soden bizen not nioideki style.
This sword is also very active Soden bizen like Cyogi utsushi broght
and clear hamon active sunagashi and kinsuji.
Especially fantastic Jigane make us great satisfaction.

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Appraisal Quiz #465 (November 18th, 2017)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length :　64　cm or 25.19 inches.
Sori : 1.45 cm or 0.55 inches.
Mekugi : 1
Width at the hamachi : 3.10 cm or 1.22 inches.
Width at the Kissaki : 2.15 cm or 0.84 inches.
Kasane : 0.72 cm or 0.28 inches.
Shape : The blade is thick healthy blade and longer kissaki.
Jigane : Ko-Itame hada well grained with jinie attach nice texture.
Hamon : Niedeki, Gunome midare.
Ashi with deep nioikuchi work and sunagashi and also kinsuji work.

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