Order number : 151029
Tanto in Shirasaya, with Koshirae. (NBTHK Tokubetsu Hozon Paper)
Signature : Rai Kunimitsu
(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saku)
This Rai Kunimitsu belongs to Jyojyo ranking.
The blade was polished.
Blade length : 25.60 cm or 10.1 inches.
Sori : 0 cm or 0 inches.
Mekugi : 3
Width at the hamachi : 2.41 cm or 0.94 inches.
Kasane : 0.55 cm or 0.22 inches.
Era : Later Kamakura period.
Shape : Well balanced for width and thickness, Mitsumune style Tanto. Gomabashi engraved on Omote and Wide Hi, Suken, line and Bonji engraved.
Jitetsu : Koitame-hada well grained with deep Jinori attached.
Hamon : Niedeki Suguha deep Nioikuchi with Koashi, Sunagasi, Kinsuji work.
Special feature : Rai Kunimitsu is a swords smith of Yamashiro. He is thinked as either Rai Kunitoshi’s son or disciple. He is most skillful smith in Rai school.
The most old blade remaing with year signature is forged at Karyaku 1(1326) and the most new one is forged at Kanou 2 (1351). From this long time and variation of signatures, there are possibility 2 generation for Rai Kunimitsu has existed.
Rai Kunimitsu is famous for his great Tanto and this blade has signature remaining, having charactaristic of Soshuden style taste.
This type of engrave can be seen on the blades forged by other swords smith like Sintougo Kunimitsu so this could be used for some spiritual ritual.
Tsuba : Silver grass engraved on Mokkoshape Shakudo Tsuba with gold color.
Fuchikashira : Flower engraved on Shakudo plate with gold color.
Saya : Lacquered Kairagi-Samekawa Saya.
Menuki : Person with baskets engraved on one side, fighting bee and spider on the other side.
Kozuka : Mouse, trap and a person laughing are engraved on Shakudo Nanakoji plate. Very unique design.
Kogatana : The signature is mentioned as ‘Soushu-Ju Yoshihiro’.
Historical background: At Genko 1st(1331), emperor Godaigo escaped from Kyoto to Kasama mountain with Imperial Regalia. He was caught after and then exiled to Oki island.
NBTHK Tokubetsu Hozon Paper
Aoi Art estimation paper : whole Oshigata.