Previous answer is
　Mumei(judged as Shikkake)
無銘(尻縣)　

Special feature: Shikkake school is one of Yamato Goha, we have Hosho, Tegai, Taima and Senjuin addtion to that. Each school has their own characteristics and made many swords in those days. Shikkake was founded by Norinaga and there were generations. It is said that the times of the early swordsmiths can be around the mid Kamakura period, so their swords have characteristics of Yamato Mono strongly. This sword is very old, because it is made from Nagamaki and characteristics of Jigane and Hamon.

==============================================
Appraisal Quiz #715 (November 5th, 2022)
Who made this sword do you think ?
==============================================

Blade length:68.9cm or 27.12inches.
Sori:1.2cm or 0.47inches.
Mekugi:1
Width at the hamachi:2.8cm or 1.10inches.
Width at the Kissaki:1.7cm or 0.66inches.
Kasane:0.64 cm or 0.25inches.
The weight of the sword:570grams
Shape: The blade is normally broad and thick with adequate Sori and longer Kissaki.
Jigane: Koitamehada is grained well with Masamehada mixed. Jigane is very dense to look like plain.
Hamon: Koniedeki, Suguha from Hamachi and Hamon like waves after that.
From near Monouchi, it becomes much more like waves. Boshi turns back round sharply.

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

Answer will be posted at next Appraisal Quiz.

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

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