Previous answer is
Bizen Kuni Ju Osafune Gorozaemon Jo Kiyomitsu/Tenbun 3 Nen 8 gatsuhi (1535,August.)
Special feature : Gorozaemon Jyo Kiyomitsu is one of the best sword maker in Muromachi period Bizen school.
Sukesada and Kiyomitsu are both top ranking bizen school sword makers.
At that time Japan was war time and produced uncountable swords for supply demanding samurai.
Most of them are mass productive swords but Daimyo and other high ranking samurai asked to make
the best quality swords which is called Zokumyo Uchi sword.
These swords are put the signature on the Nakago own his craftsman’s name which is called Zokumyo.
These magnificent swords are coveted by high ranking samurai and Daimyo.
Especially Goro daemon and Magouemon Kiyomitsu and well known sukesada.
This blade is wide and thick very healthy blade and fantastic Jigane.
The condition of the Nakago is perfect and bistable to see the Yasurime and signature well.
This sword has been kept in good condition for a long period with take a great care of sword.
Engrave a dragon twisting Ken and Hachiman Daibosatsu Japanese words are nice.
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Appraisal Quiz #254 (August 9th, 2013)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 70cm or 27.57inches.
Sori : 2.25cm or 0.88inches.
Mekugi : 2
Width at the hamachi : 2.77cm or 1.09inches.
Width at the Kissaki : 1.69cm or 0.66inches.
Kasane : 0.65cm or 0.25inches.
Shape : The blade is regular sized osuriage mumei (cut shortened) Katana.
Jitetsu : Itame hada well grained with mokume mixed. Jinie is attached with delicate chikei is mixed. Very beautiful jigane.
Hamon : Konie base suguha with kogunome mix. There are ko-ashi and Yo attached.
Boshi is Notarekomi style. And tip is Komaru.
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