Koto Nanbomucho period (Teiji era / circa 1362-) Bizen
Length of cutting edge 71.4cm Curvature 1.6cm Width of base 30.9mm Width of Yokote 20.0mm Thickness of base 7.0mm
Length of Kissaki 34.0mm Length of Nakago 21.1cm Nakago Curvature 0.2cm
NBTHK(The 24th JUYO TOKEN) certificate