Previous answer is
　 Izumi Kami Kaneshige　

Special feature:Kaneshige was a swordsmith clan originated in Echizen province.
The first Kaneshige moved to Edo at the beginning of Kan-ei era and got the title of Izumi Daijo in1626,
later served for the Todo Daimyo family and also forged sword in Sesshu province,
present Mie pref. and passed away around 1658.
Kaneshige's sword is very sharp and ranked at Ryo-wazamono.
Quite a few swords still survive inlayed with gold on the tang about the result of cutting test.
It is said that a great swordsman Miyamoto Musashi treasured Kaneshige's katana.
The distinctive feature appears on highly-spirited temperline resembled to Kotetsu.

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Appraisal Quiz #600 (August 1st, 2020)
Who made this sword do you think ?
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Blade length : 68.2 cm or 26.85 inches.
Sori : 2.1 cm or 0.82 inches.
Mekugi : 2
Width at the hamachi : 2.77cm or 1.09 inches.
Width at the Kissaki : 1.94 cm or 0.76 inches.
Kasane : 0.70 cm or 0.27 inches.
Shape : This blade is regular size Osuriage-Mumei.
Jitetsu : Itame hada grained with Jinie attach.
Hamon : Choji midare and Ko-notare and Gunome midare are mixed.　
Boshi is Midarekomi and Yakitsume style.

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