AS25143 Katana:Hirosada(NBTHK Hozon Paper)

Katana in Shirasaya(NBTHK Hozon Paper)

Signature: Hirosada.

(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku
Jyo saku and regular saku)
This blade belongs to Jyo Saku ranking.

Blade length : 72.0 cm or 28.34 inches.
Sori : 1.5 cm or 0.59 inches.
Mekugi: 2
Width at the hamachi : 3.08 cm or 1.21 inches.
Wide at the Kissaki : 1.87 cm or 0.73 inches.
Kasane : 0.62 cm or 0.24 inches.
Era : The late Muromachi period
Shape : The blade is regular sized sword.
Jitetsu :Koitame hada well grained with much jinie attach.
On the fantastic nice jigane, clear Utsuri appear .jigane.
Hamon : koniedeki Suguha hamon with komidare.

Special feature : The signature is mentioned on the Omote side.
There are several sword maker mentioned Hirosada.
It is difficult to say which Hirosada but I think the Jigane and Hamon, the blade looks like Aoe school.

NBTHK Hozon Paper
Aoi Art estimation paper : whole Oshigata.