Tanto in Koshirae (NBTHK Hozon Paper)
Signature : Hiro (Den Hiromasa)
(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.
Habaki : copper single Habaki.
Blade length : 20.9 cm or 8.23 inches.
Sori : -
Mekugi : 2
Width at the Hamachi : 2.14 cm or 0.84 inches.
Kasane :0.55 cm or 0.22 inches.
Era : Late Muromachi period.
Shape : The blade has been Suriage (cut shortened) and remained the signature ‘Hiro’.
Jigane : Koitame-hada well grained with Jinie attach nice Muji style texture.
Hamon : Nioideki Hitatsura Hamon.
Special feature : Hiromasa is a stream of the Soshu Hiromitsu who made Hitatsura hamon at Nanbokucho period.
Hiromasa was working at mid Muromachi to late Muromachi period for several generations.
This Hiromasa is small size and good active Hamon.
Koshirae : Aikuchi Koshirae.
Saya : Unusual kawari nuri saya with a picure of bat.
Menuki : A horse is engraved by Shakudo plate.
NBTHK Hozon Paper
Aoi Art estimation paper : whole Oshigata.