The blade was polished.
Blade length : 69.5 cm or 27.36 inches.
Sori : 2.0 cm or 0.78 inches.
Mekugi : 2
Width at the hamachi : 2.63 cm or 1.04 inches.
Width at the Kissaki : 1.96 cm or 0.77 inches.
Kasane : 0.55 cm or 0.22 inches.
Weight of only blade : 540 g
Era : Late Muromachi period.
Shape : It is cut shorten mumei sword withs deep curve.
It is elegant shape katana.
Jitetsu : Itame had well grained with jinie attached.
It is well grained jigane.
Hamon : Nie base suguha with
Special feature : This sword has deep curve with the pattern of sanbonsugi.
Koshirae : Handachi Issaku koshirae
Koshirae is Issaku koshirae. The condition is fine condition. On the saya and tsula there is black skin with family crest engraved.
It may have served the role as protecting katana from rain and snow.
Tsuba : Iron tsuba with unjyu engraved an inlayd with gold.
Fuchikashira : Shakudo nanakoji plated with dragon design engraved.
Saya : Lampet shell sparkles
Menuki : Shakudo plated with dragon design engraved.
Kojiri : Kurigata: Shakudo nanakoji plate with dragon desing engraved and inlayed with gold.
NBTHK Hozon Paper
Aoi Art estimation paper : whole Oshigata.