Ordering number : AS16699
Katana in Shirasaya with Koshirae (NBTHK #39th Juyo paper) (consignment sale)
Signature : Bizen (attributed as Ko Yoshii school Sanenori)
(We divide 4 sections for each sword as Saijo saku, Jojo saku, Jo saku and regular saku)
This sword belongs to Saijo saku ranking.
The blade is polished by Highest ranking polisher.
Habaki : Gold wrapped double Habaki.
Blade length : 71.21 cm or 28.0 inches.
Sori : 1.82 cm or 0.72 inches.
Mekugi : 2
Width at the Hamachi : 3.0cm or 1.18 inches.
Width at the Kissaki : 2.21 cm or 0.87 inches.
Kasane : 0.78 cm or 0.31 inches.
Era : Early Nanbokucho period (1336~)
Shape : Osuriage (cut shorten from stem of the blade) but ‘Bizen’ signature remaining. Wide and thick blade with deep curve long Kissaki nice looking shape.
Jigane : Koitame-hada well grained with Ko-Mokume mixed Chikei working on surface of the blade most fine quality.
Hamon : Konie-deki Choji-midare with small Gunome active temperline with Yo working. Boshi turns back Midarekomi style.
Special feature : Osuriage (cut shorten from stem of the blade) but ‘Bizen’ signature remaining and from shape of Kanji character, the swordsmith forged this blade was estimated as Ko Yoshii Masanori by NBTHK.
Though this Gunome-Midare Hamon differ to Ko-Gunome Midare we can see usually on Yshii school but thick and healthy such like Kanemitsu.
Mr. Tsuruta estimated that the blade looks similar to Yoshii Masanori but Hamon style is unusual as hem so not really sure Masanari or the other high skilled Bizen swordsmith forged this blade. Hamon is so bright then usual Yoshii-Bizen school.
Such healthy Koto Juyo Token blade forged at Nanbokucho period became difficult to find in Japanese sword market. We also recommend as good investment for the far future.
Saya : Russet Saya with special coloring
Tsuba : (NBTHK Hozon paper) Dragon engraved openwork on round shape iron plate. This Tsuba is attributed as Echizen school.
Menuki : Dragon and the peron carved on Shakudo plate with gold and silver color.
Fuchikashira : Plain Shibuichi plate.
NBTHK #39th Juyo paper
Aoi Art estimation paper : whole Oshigata.