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Koto on the latter half of Muromachi period (Daiei era/ca1521-) Mikawa Length of cutting edge 40.7cm Curvature 1.0cm Width of base 35.1mm Thickness of base 6.8mm
NBTHK(Tokubetsu Hozon) certificate
Koto Nanbokucho period (Ouan era/circa 1368) Mino Length of cutting edge 63.7cm Curvature 1.5cm Width of base 30.0mm Width of Yokote 22.6mm Thickness of base6.4mm
Hon'ami Kōson Origami certificate
Shin-shin-to end of Edo period (Kaei 7th/1854) Mikawa Length of cutting edge 29.8cm Curvature 0.1cm Width of base 28..5mm Thickness of base 8.4mm
NBTHK(Hozon) certificate
Shinto Early Edo Period (Gen'na 7 - Kan'ei 11 / 1621-34) Owari Length of cutting edge 75.7cm Curvature 1.7cm Width of base 31.0mm Width of Yokote 21.7mm Thickness of base 7.5mm
Koto End of Muromachi period (Genki-Tensho era/1570-90) OwariLength of cutting edge 41.8cm Curvature 1.0cm Width of base 32.7mm Thickness of base6.5mm
signed : Tanshu-ju SADAMASA
Round shape, Iron ground, polished surface, Openwork, Shakudo Fukurin rim, single Hitsu-ana punch
77.0mm x 75.0mm 3.8mm thick (Mimi) / 4.5mm thick (Seppa-dai)
signed : Bamen TSUNEMASA (seal)
Round shape, Iron ground, Openwork, Sukisage carving, both Hitsu-ana punches, a bit on contoued square Mimi rim
72.3mm x 70.0mm 3.8mm thick (Mimi) / 4.9mm thick (Seppa-dai)
unsigned : Owari
Round shape, Iron ground, Openwork, a bit on contoued square Mimi rim
70.3mm x 70.0mm 6.4mm thick (Mimi) / 6.6mm thick (Seppa-dai)
Shinto Early Edo period (around Enpo era/1673-) Settsu Length of cutting edge 58.7cm Curvature 1.6cm Width of base 33.5mm Width of Yokote 22.5mm Thickness of base 7.5mm
with) Ivy Arabesque Design Black Stone surface lacquered scabbard Han-Tachi-style Koshirae
Koto Early Muromachi period (Ouei era / circa 1394-) Bizen Length of cutting edge 60.1cm Curvature 1.8cm Width of base 25.2mm Width of Yokote 15.3mm Thickness of base 5.0mm
NBTHK (Tokubetsu Hozon) certificate
with) Yoshino cherry tree Tin pearl of inlay Nashiji sprinkled Gold/Silver foils raised Taka-Makie work Itomaki Tachi Koshirae
unigned : Ko-kinko
Oval shape, Yamagane copper ground, Nanako-ji surface, Sukinokoshi style Takabori carving
65.4mm x 61.7mm 3.0mm thick (Mimi) / 4.5mm thick (Seppa-dai)
Round shape, Yamagane copper ground, Polish surface, Yakite-kusarashi chemical oxidationed, a bit on contoued Mimi rim
80.4mm x 80.0mm 3.8mm thick (Mimi) / 2.9mm thick (Seppa-dai)
unigned : Chōshu
Round shape, Iron ground, Polish surface, Nikuibori carving, Both Hitsuana punches filled with Shakudo
79.9mm x 79.0mm 4.4mm thick (Mimi) / 4.4mm thick (Seppa-dai)
Koto End of Muromachi period(Eiroku era/1558-) Mino Length of cutting edge 39.2cm Curvature 0.7cm Width of base 32.2mm Thickness of base 5.7mm
with)Pipe stripe Vermillion Urumi-nuri lacquered scabbard Chisa-katana Koshirae
Signed : Echizen-koku ▢▢saku (AKAO)
Oval Tatemaru shape, Iron ground, Bubble-Nanako-ji surface, Nikuibori carving, Shakudo Fukurin-rim
75.3mm x 73.5mm 3.1mm thick (Mimi) / 4.0mm thick (Seppa-dai)
Shinto advance early Edo period (Shouo era to Meireki 3rd / 1644-57) Yamashiro Length of cutting edge 71.5cm Curvature 1.2cm Width of base 31.2mm Thickness of base 6.8mm Width of Yokote 18.2mm
NBTHK(Tokubetsu Hozon) certificate for Katana
with)Black Ro-iro lacquered scabbard Uchikatana Koshirae
NBTHK(Tokubetsu Kicho) certificate for Tsuba
Shinto Early Edo period (Kanbun era /circa 1662 - ) Yamashiro/Echizen Length of cutting edge46.8cm Curvature1.4cm Width of base32.6mm Thickness of base7.3mm Width of Yokote23.1mm
with)Black lacaured Natane rapeseed pattern scabbard Wakizashi Koshirae
Koto end Muromachi period (Eiroku 12th/1569) Houki Length of cutting edge 25.1cm Curvature 0.1cm Width of base 24.2mm Thickness of base 6.0mm
with)Black Stone-surface Ishimeji scabbard Aikuchi style Koshirae
