Previous answer is
　　Mumei (Den Kencho)　

Special feature: It is said that Kanenaga was a student of Osafune Nagayoshi.
His blades are almost Mumei. And his blades with signature are very rare.
His blades are very similar to Nagayoshi.
But some his blades are more conspicuous Soshuden style than Nagayoshi.

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Appraisal Quiz #619 (December 12th 2020)
Who made this sword do you think ?
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Blade length : 70.15cm or 27.62 inches.
Sori : 1.06 cm or 0.42inches.
Mekugi : 3
Width at the hamachi : 3.15 cm or 1.24 inches.
Width at the Kissaki : 2.59 cm or 1.02 inches.
Kasane : 0.75 cm or 0.295 ord 810 grams.
weight :910 grams
Shape : The blade is wide and thick with small sori ,long kissaki with bo-hi
on both sides of the blade.
Jigane :Item hada, mokube hada mixed with thick jinie attach and chikei work
and midare unsure appear.
Hamon :Kogunome midare, gnome midare, small Myoji midare, konotare.
The lower half is slightly wider than the upper half
Wide and gorgeous temper line with sunagashi, and kinsuji work.
Bo-shi: Midarekomi and turns back sharply.

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Answer will be posted at next Appraisal Quiz.

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