Previous answer is
Bizen Koku Ju Osafune Yosozaemon Jo Sukesada Saku/
Eisho 16 Nen 8 Gatsu Kichijitsu
Special feature:Under the strong protection of the Akamatsu family known as a feudal lord in the Age of Provincial Wars, many excellent swordsmiths had been prospered in Bizen province around the Muromachi period. Sukesada of Osafune School wielded influence not only making swords supplying a domestic demand but also supplying demand exporting to China.
This is a traditional tanto made in the late Muromachi period.
It is an accepted theory that the signature begins
Bishu mei sword was produced in large quantities.
Contrary the signature begins ﾒBizen Kokuﾓ was made accepting special orders.
The workmanship of this sword reminds us of Yoso zaemon (No) Jo Sukesada.
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Appraisal Quiz #479 (March 3rd, 2018)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 68.5 cm or 26.96 inches.
Sori : 2.8 cm or 1.10 inches.
Mekugi : 1
Width at the hamachi : 3.21 cm or 1.26 inches.
Kasane : 0.76 cm or 0.29 inches.
Shape : Wide, high Shinogi, Shobu Tsukuri Katana.
Jigane : Itame Hada and Mokume Hada grained with Jinie attach.
Hadadatsu.
Hamon : Nie Deki, the mixxture of Gunome Midare,
Choji Midare and Ko-Choji Midare.
In Ha, there are many Ko-Ashi and Yo.
Boshi is Hakikake and Yakizume style.
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