Early Edo period (circa Kanbun 1-4/1661-65) HizenLength of cutting edge 74.4cm Curvature 1.5cm Width of base 32.0mm Width of base 21.5mm Thickness of base 6.8mm
NBTHK(Tokubetsu Hozon) certificateNBTHK(Tokubetsu Kicho) certificate