Previous answer is
Amahide (Suishinshi Masahide first generation)/Bunsei 3 Nen 8 Gatsu Hi
Special feature : Suishinshi Masahide the First forged this katana.
Masahide was born in Yamagata pref. in 1750. It is said that he learned under Kunikane the Forth. Masahide went to Edo and learned under Yoshihide at the age of 22. Masahide became a retained swordsmith of the Akimoto family and studied the method of making sword and disciplined pupils. A daimyo; a feudal lord gave Masahide foreign steel called Namban-tetsu to study. He was fond of brilliant Toran-ba that had a tendency to break so he tried to the revival of Koto aimed at the sharpness. It is an accepted theory that he was the founder of Shinshin-to.
There are various kind of his signatures pattern with Kao or Kokuin.
Kao is a written seal. Personal device often added to a signature.
Kokuin is a kind of carved seal that is subject to wear so several patterns
of his kokuin survives on his works. On his early works circa Anei to Tenmei era,
he didn’t use the Kokuin. The sword made in the Kansei era,
Masahide used the Kao. He started using the Kokuin around Bunka era
and most of the sword forged in that period bears it on the tang.
He passed away in 1825 aged 76.
Appraisal Quiz #545 (June 28th, 2019)
Who made this sword do you think ?
Blade length : 69.1 cm or 27.20 inches.
Sori : 1.06 cm or 0.41 inches.
Mekugi : 1
Width at the hamachi : 3.08 cm or 1.21 inches.
Width at the Kissaki : 2.14 cm or 0.84 inches.
Kasane : 0.69 cm or 0.27 inches.
The weight of the sword: 745 grams.
Shape : Wide and thick with Sori.
Jigane : Itame Hada well grained with Jinie attach.
Hamon : Nie deki, Gunome Midare with thick Nioikuchi.
There are Ko Ashi, double Hamon, Sunagashi and Kinsuji.
Boshi is round Hakikake style.
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