Koto End of Muromachi period (Tensho era/circa 1573-91) MinoLength of cutting edge 40.7cm Curvature 0.8cm Width of base 32.3mm Thickness of base 5.3mm
NBTHK(Tokubetsu Hozon) certificate
with)Black Stone surface lacquered scabbard Chisa-katana Koshirae