Previous answer is
　　Taikei Naotane (Kao)
大慶直胤(花押)　
(probably written”Dewa Kuni Taikei Naotane[Kao]”)
Bunsei 4 Nen Chushun
(Mid spring[February], Bunsei 4[1822])

Special Feature: A work made in February, Bunsei 4 by Taikei Naotane. It is
really tragic that some letters became unclear on Nakago. We tried to
read and it could be “Dewa Kuni Taikei Naotane”.

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Appraisal Quiz #681 (March 5th, 2022)
Who made this sword do you think ?
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Blade length: 70.0 cm or 27.56inches.
Sori:cm 0.46or 0.18inches.
Mekugi: 4
Width at the hamachi: 2.42cm or 0,953inches.
Width at the Kissaki: 1.78cm or 0.7inches.
Kasane: 0.446cm or 0.176 inches.
The weight of the sword: 480 grams.
Shape: Osuriage, slightly slender shape with deep sori and longer Kissaki.
Jigane: Koitame hada is quite well-grained with jinie attach.
On the front, hamachi area, there are some flows.
Hamon: Niedeki, Gunomemidare. Sunagashi and Kinsuji work in Hachu.
From Monouchi and after that, functions in Hachu get more and more active.
Kinsuji comes into Boshi and gets complicatedly disordered.

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Answer will be posted at next Appraisal Quiz.

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