Previous answer is
Ishido Unju Korekazu kitae no Ansei 6 Nen Aki 8 gatsu.
Do nen 11 Gatsu 23 Hi Senjyu Mitsudo Setsudan Yamada Yoshitomi Tamesu No Motooki Nyudo Syoken Kitae No.
Special feature : Ishido Unju Korekazu is a nephew of Cyounsai Tsunatoshi and called Masataro born Bunsei 3rd(1821)year.
Later on He became adopted son and succeeded 7th generation Korekazu.
First generation Korekazu was making Bizenden scool Ichimonji style.
But 7th generation Korekazu’s Hamon is quite different like Soden and mixed up Bizen which is called Sodenbizen.
He teach many student especially fanned by emotional for Sumi Motooki.
Sometimes we find Gasaaku to(sword) Korekazu and Motooki.
At Meiji 2nd year,
he changed his name to Ryusensai but after the Haitorei, he stop his business.
He passed away age 75 years of lad Meiji 24th November 24th.
This sword was made by main part by Ishido Unju Korekazu and Sumi Motooki.
The blade is unusual shape and top ranking wonderful Sodenbizen Hamon and
also precious saidanmei(cutting test) by Yamada Yoshitomi cutting tester.
Appraisal Quiz #234 (March 8, 2013)
Who made this sword do you think ?
Hints. ※The picture will be enlarged
Blade length : 70.30 cm or 27.67 inches.
Sori : 1.81 cm or 0.71 inches.
Mekugi : 1
Width at the hamachi : 3.13 cm or 1.23 inches.
Width at the Kissaki : 2.02 cm or 0.79 inches.
Kasane : 0.82 cm or 0.32 inches.
Era : Late Muromachi period.
Shape : The blade is wide and thick with nice sori and also long kissaki nice looking shape.
Also kealthy blade.
Jitetsu : Koitame had and mokume had mixed with jinie attach nice grained texture.
Hamon : Niedeki suguha with kasha and yo work.Boshi is midarekomi.
Answer will be posted at next Appraisal Quiz.
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