Previous answer is
Muramasa
Special feature : Muromasa was working at Ise Kuwana province which is called Yoto Muramasa.（specter sword)
Grand father of the Tokugawa Ieyasu Hirotada was assassinated by Muramasa and his son Nobuyasu was
ordered to Seppuku and killed by Muramasa.
Ieyasu himself was injured by Muramasa Yari, so Ieyasu has a vehement hatred of Muramasa.
So Tokugawa Syogun issued impose the ban for holding Muramasa.
Many Daimyo changed the blade to another signature by removing one signature like this Tanto.
Some Daimyo who dislike Tokugawa Syogu liked Muramasa and collected.
The students of the Muramasa are Masashige, Masazane and so on.
I think The Hamon of the Muramasa is very big differen from other sword maker’s
The Hamon is square shape gunome midair and same hamon on bit sides of the blade.
Recently it is very hard to buy Muramasa. We recommend this rare sword Muramasa for you.
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Appraisal Quiz #362 (November 13th, 2015)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 67.87 cm or 26.72 inches.
Sori : 1.2 cm or 0.47 inches.
Mekugi : 2
Width at the hamachi : 2.96 cm or 1.16 inches.
Width at the Kissaki : 2.14 cm or 0.84 inches.
Kasane : 0.64 cm or 0.25 inches.
Shape : It is wide and thick sword with shallow sori. Kissaki is long end. NIce shape katana.
Jitetsu : Koitame hada well grained with masame hada appearing. There is jinie well attached and chikei activity. It is elegant jigane.
Hamon: Nie deki. There is box like gunome midare appearing.
It is deep nioiguchi Doranba. In Ha, there are many Sunagashi and Kinsuji.
Boshi is Notare round Hakikake shape.
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