Previous answer is
Bishuu Osafune Jyuu Kanemitsu/Kouei 2 Nen 11 Gatsuhi
Special feature : There are several Kanemitsu existing from Nanbokucho period to late Muromachi period.
He was born as the oldest of Kagemitsu and was named Magozaemon.
It is hard to identify which wordsmith made this sword as there are too many wordsmith from Muromachi period.
However, the blade is aged. This piece is very famous wordsmith.
The blade is listed in Tokojiten-Fujishiro-(sword reference) on 19page and it is seen in many other references.
It is well known that it has come down from Uesugi family as Gousui Shinkiri. It is also known as Naoe Kanetsugu’s beloved sword.
It is called Suijingiri(The cut of the water god) as it is said that this blade has controlled the flood.
It is a Jyuuyo Bijyutsu Hin(Art Treasure). It is heritage from the Uesugi family and it is well known.
It is also famous for the beloved sword of Naoe Kanetsufu,
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Appraisal Quiz #265 (November 8, 2013)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 72.2cm or 28.42 inches.
Sori : 1.7cm or 0.66 inches.
Mekugi : 2
Width at the hamachi : 2.78cm or 1.09 inches.
Width at the Kissaki : 1.62 cm or 0.63 inches.
Kasane : 0.55 cm or 0.21 inches.
Era : Early Muromachi.
hints.
1.The blade is oosuriage mumei(cut shortened)
2.The jigane is well grained with jinie attach and visible to see the texture.
3.Hamon: Gunome midare and cyoji midare and also togari gunome midare.
4.Boshi midarekomi and yakizume style.
5.It is difficult but the blashi and togari gunome midair hamon.
6.The sword is oosuriage mumei.
7.This school continued to late Muromachi period.
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