Previous answer is
Mumei(Sekishu Dewa Sadatsuna)
Special feature: The founder of Sekishu Sadatsuna is Naotsuna and
Sadatsuna was a son of Naotsuna. His style called “Hokkoku Mono”.
The Jigane is black and Hadatachi, many interesting changes.
Appraisal Quiz #597 (July 11th, 2020)
Who made this sword do you think ?
Blade length : 68.9 cm or 27.12 inches.
Sori : 1.9 cm or 0.74 inches.
Mekugi : 2
Width at the hamachi : 3.05 cm or 1.20 inches.
Width at the Kissaki : 1.94 cm or 0.76 inches.
Kasane : 0.66 cm or 0.25 inches.
Shape : Regular width and thickness Katana.
The shape is elegant old style.
Jigane : Itame Hada and Mokume Hada with Jinie attach.
Hamon : Ko Nie Deki, Suguha base with Ko-Ashi.
The Nioikuchi is thick. The Habuchi is soft. The Hamon is graceful.
In Ha, there are fine Sunagashi and Kinsuji.
Boshi is Notare and Hakikake style.
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