Koto early Muromachi period (Shouchō 2/1429) Bizen Length of cutting edge 34.2cm No Curvature Width of base 25.1mm Thickness of base 5.5mm
NBTHK(Tokubetsu Hozon) certificate
with) Tame-nuri crimson undercoat transparent topcoat lacquered scabbard Chi-sa Katana Koshirae