Previous answer is
So-shi Jiro Taro Naokatsu/Ansei 3 Nen 11 Gatsu-Hi
Special feature : The secular name of Jiro Taro Naokatsu is Kazusa Sojiro.
He learned under Naotane and became an adopted son. He lived at Edo and served the Akimoto clan
at Tatebayashi in Joshu province, present Gunma pref. and passed away in 1859, aged 54.
Naokatsu was the most skillful swordsmith next to Naotane or Masayoshi in the Suishinshi-Masahide clan.
His excellent skill for Soshu-den, Bizen-den and Seki-den styles are very close to his master Naotane.
This sword is a copy of the Kanemitsu Nagamaki style.
So the blade is Ubu nakago which even looks like Suriage Nakago unusual shape.
Appraisal Quiz #486 (May 5th, 2018)
Who made this sword do you think ?
Hints. ※The picture will be enlarged
Blade length : 68.4 cm or 26.9 inches.
Sori :1.1cm or 0.433 inches.
Mekugi : 2
Width at the hamachi :2.9 cm or 1.14 inches.
Width at the Kissaki : 2.25cm or 0.89 inches.
Kasane :0.6 cm or 0.24 inches.
Shape : The blade is oosuriage mumei(cut shortened) and rather wide and engraved bo-hi on both sides of the blade.
Jigane :The Jigane is vivid Sosyu style active jigane with chikei works a lot.
Hamon :Niedeki gunome midare with deep nioikuchi and small gunome midare mixed. In Hamon, there are sunagashi and kinsuji scatter.
Answer will be posted at next Appraisal Quiz.
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