Previous answer is
Mumei (Bizen Osafune Morishige)
Special Feature: Though it is a judged Mumei, this work is quite marvelous because there are no flaws and defects.
Appraisal Quiz #685 (April 2nd, 2022)
Who made this sword do you think ?
Blade 70.0length: cm or 27.55inches.
Sori:1.4cm or 0.55inches.
Width at the hamachi:2.79cm or 1.09inches.
Width at the Kissaki:1.89cm or 0.74inches.
Kasane: 0.67cm or 0.26inches.
The weight of the sword: 690grams.
Shape: the blade is broad and thick with slightly deep Sori and longer Kissaki. Well-shaped.
Jigane: Itamehada and Mokumehada, O-Itamehada is mixed.
Hamon: Koniedeki with deep Nioikuchi, Gunomemidare. Kinsuji and Sunagashi work in Hachu actively.
Answer will be posted at next Appraisal Quiz.
(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)