Koto End of Muromachi period (Tensho era/circa 1573-) MinoLength of cutting edge 27.0cm Curvature 0.1cm Width of base 24.9mm Thickness of base 5.4mm
NBTHK(Hozon) certificate
with) Black Roiro lacquered scabbard Tanto Koshirae
Shinto early Edo period (Gen'na era/1615-) Owari/AkiLength of cutting edge 30.9cm No curvature Width of base 27.0mm Thickness of base 7.9mm
NBTHK(Tokubetsu Hozon) certificate
with) Gold Pearl of Inlay scabbard Chi'sa Katana style Tanto Koshirae
Shin-shin-to End of Edo period (Ansei 6 - Bunkyu 2 /1859-62) KagaLength of cutting edge 28.5cm Curvature 0.2cm Width of base 28.0mm Thickness of base 5.6mm
with)Black Stone surface lacquered scabbard Aikuchi style Koshirae
