Previous answer is
　Musashi Taro Yasukuni
武蔵太郎安国
Shin 15 Mai Koubuse Zukuri
真十五枚甲伏作

Special feature: Musashi Taro Yasukuni is a pupil of Omura Kaboku and lived in Azabu, Edo. He is said to have been very popular already in those day. Kobuse is a method to forge a sword. In the film “Dai Bosatsu Toge”, a leading actor, Kataoka Chiezo, used a Katana by Yasukuni and his swords became really popular after WW2.

==============================================
Appraisal Quiz #716 (November 12th, 2022)
Who made this sword do you think ?
==============================================

Blade length:76.4cm or 30.07inches.
Sori:1.0cm or 0.39inches.
Mekugi:1
Width at the hamachi:3.33cm or 1.31inches.
Width at the Kissaki:2.28cm or 0.89inches.
Kasane:0.7 cm or 0.27inches.
The weight of the sword:920grams
Shape: The blade is broad and thick with adequate Sori and slightly longer Boshi.
Jigane: Koitamehada is very dense, beautiful Jigane.
Hamon: Suguha from Hamachi and after that Gunomemidare and Chojimidare,
Kobushi Choji with long Ashi. Sunagashi and Kinsuji work. Boshi is Notare and after that turns back in a small circle.

================================================

Answer will be posted at next Appraisal Quiz.

================================================

(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)