Koto end of Muromachi period (Tenbun era circa 1532-) Mino Length of cutting edge 68.4cm Curvature 1.5cm Width of base 31.5mm Width of Yokote 26.1mm Thickness of base 6.2mm
NBTHK(Hozon) certificate
with) Black Ro-iro lacquered scabbard Tensho Uchi-katana koshirae
NBTHK(Hozon) certificate for Tsuba