Koto Middle of Muromachi period (Bunmei 12/1480) BizenLength of cutting edge 25.9cm a bit on inward curve Width of base 23.3mm Thickness of base 9.7mm
Reported/printed in the book of [Nihon Toko Jiten]
Rported in Osafune-cho-shi
NBTHK Tokubetsu Hozon Token) certificate
with) Urumi-nuri blurred red lacquered scabbard AIKUCHI Tanto Koshirae
NBTHK Hozon Tosougu) certificate for Kozuka
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
Koto early Muromachi period (Shouchō 2/1429) BizenLength of cutting edge 34.2cm No Curvature Width of base 25.1mm Thickness of base 5.5mm
NBTHK (Tokubetsu Hozon) certificate
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
