Mei: Mumei, but had been SUEBIZEN
Material: Tamahagane
Temper patterns: Ko-Gunome-Midare
Era: Late Muromachi period
Country (kuni): Bizen Province
Paper(status): [N.B.T.H.K] hozon token (June 3, 2022)
Blade Length (Cutting edge): 70.6cm
Curve (Sori): 1.0cm
Width at the hamachi (Moto-Haba): 3.1cm
Wide at the kissaki (Saki-Haba): 2.0cm
Thickness of the Moto-Kasane: 0.6cm
Weight: 786g
Rivet holes (Mekugiana): 2
[Additional Information]

This a sword purchased from a collector. The Sayagaki states that is was made by Honami Kouyuu of Motoshige in Bizen. However, It was graded Sue Bizen in the NBTHK examination. I believe this sword is older than Sue Bizen because of the Utsuri on this sword.