Previous answer is
Special feature : Morimitsu and Yasumotsu are the top ranking sword makers in Ouei bizen school.
Morimitsu was a son of the Tomomitsu who was called Syuri no sue working Ouei 2nd year to Eikyo era.
Generally he made Tanto, wakizashi mainly and sometimes Tachi.
This blade is long (75,8cm) with deep elegant sori nice looking shape.
The blade is almost Ubu nakago.
He made sword active gunome Cyoji midair hamon but this sword is Suguha hamon elegant looks old Tachi which looks like Unrui or Bizen Osafune ….from Jyuyo token zufu.
The Jigane is marvelous fantastic Jigane and deep sori gorgeous Tachi.
Appraisal Quiz #250 (July 14th, 2013)
Who made this sword do you think ?
Hints. ※The picture will be enlarged
Blade length : 68.7 cm or 27.04 inches.
Sori : 1.8 cm or 0.70 inches.
Mekugi : 2
Width at the hamachi :2.93 cm or 1.15 inches.
Width at the Kissaki : 1.97 cm or 0.77 inches.
Kasane : 0.57 cm or 0.22 inches.
Era : Kamakura period.
Shape : The blade is oosuriage mumie(unsigned cut shortened)
The blade is rather wide and thick with longer kissaki nice looking shape.
Jitetsu : Itame had well grained with jinie attach Oo item had convined and chikei work and also shirake Utsuri appear.
Hamon : Niedeki suguha with deep nioikuchi and small ash work.
Boshi is hakikake style.
Answer will be posted at next Appraisal Quiz.
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