Shinto Middle of Edo period (Genroku 11 -/circa 1698-) Hizen(DAI) : Length of cutting edge 70.8cm Curvature 2.5cm Width of base 31.0mm Width of Yokote 22.5mm Thickness of base 7.5mm (Oshigata sketch for DAI)(SHO) : Length of cutting edge 55.0cm Curvature 2.0cm Width of base 30.0mm Width of Yokote 21.0mm Thickness of base 7.0mm (Oshigata sketch for SHO)
NBTHK(Tokubetsu Hozon) certificateNBTHK(Tokubetsu Kicho) certificate
with) Kuro-ro-iro lacquered Daisho set of Koshirae mount
NBTHK(Hozon Tōsougu)certificate