Katana in Shirasaya (NBTHK Hozon paper)
Signature : Kagemitsu (Kashu)
Mid Koto : Chujo saku ranking : Kaga
Origami : Written by Honami Koson
(We divide 4 sections for each sword as Saijo saku, Jojo saku, Jo saku and regular saku)
This sword belongs to Jo saku ranking.
The blade is polished by good polisher.
Habaki : Gold foiled single Habaki.
Blade length : 67.9 cm or 26.7 inches.
Sori : 1.82 cm or 0.72 inches.
Mekugi : 3
Width at the Hamachi : 2.62 cm or 1.03 inches.
Width at the Kissaki : 1.91 cm or 0.75 inches.
Kasane : 0.73 cm or 0.29 inches.
Era : Around early Muromachi period (15th century)
Shape : The blade has been Suriage (cut shorten) about 2 inches.
Blade is thick, Bo-hi engraved on both sides and having very deep curve.
Jigane : Koitame-hada well grained with Jinie attach and blackish Hokkoku style Jigane.
Hamon : Niedeki Choji Midare Hamon with rather thick Nioikuchi.
Special feature : The founder of Kashu (province) Kagemitsu school has started from Nanbokucho period and the generations continued up to mid Muromachi period.
Some people mistakes them with Bizen (province) Kagemitsu school but lineage differ.
Kashu Kagemitsu has a blackish Jigane such makes us imagine snowing midnight at northern countries.
Honami Koson Sensei issued Origami paper at Showa 24th (1946).
The paper describe that the signature is genuine and the blade has a value of ‘Dai 5,000 Kan’ that means ‘very precious ranking’.
According to historical archives, Dai 5,000 Kan is about ¥125,000,000 in Japanese Yen today. So the expression is too much excess but he blade is nice anyway.
NBTHK Hozon paper
Aoi Art estimation paper : whole Oshigata.