Previous answer is
Nagasone Kotetsu Nyuto Okisato. 長曽根虎徹入道興里
Kanbun 3Nen11Gatsu 6 Hi
(gold inlay) Yanmano Kauemon Nagahisa(Kao)
2 tsu Do Saidan
Chakushi Minamoto Kinshiro
Special feature: Nagasone Kotetsu Nydo Okisato was a wekk known armor maker of Echizen province. But due to a shorp dron in demand for armor, he changed his job to swordsmith and went to Edo at the age of 50. it is said that it was commonly known as Sannojo. He called himseld Kotetsu, and also Kotetsu Nyudo.
Since August 4th year of Kanbun. the character of 虎徹 has been used. The production date is sterted from “Meireki 2 (1656)” to “Enpo 5 (1667)”. Many of his swors has Yakidashi. The style is also highly evalueayed Gunome Midare which called a Juzuba.
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Appraisal Quiz #640 (May 15th, 2021)
Who made this sword do you think ?
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Blade length : 69.1 cm or 27.20 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 2
Width at the hamachi : 2.89 cm or 1.13 inches.
Width at the Kissaki : 2.17 cm or 0.85 inches.
Kasane : 0.66 cm or 0.25 inches.
Shape : Wide and rather thick Katana with somewhat deep Sori.
Nice shape Katana.
Jitetsu : Itame Hada Nagare, Hadadachi, with Jinie attach.
Hamon : Nie Deki, Wide Suguha Hamon base, shallow Notare and Gunomemidare mixed with Ko-Ashi and Sunagashi.
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