AS17082-Katana: Ichi Hizen Kuni Dewa Kami Yukihiro. (first generation)

Katana in Shirasaya(Tokubetsu Hozon Token)

Mei: Ichi Hizen Kuni Dewa Kami Yukihiro. (first generation)

(We divide 4 sections for each sword as Saijyo saku, Jyojyo saku Jyo saku and regular saku)
This sword belongs to Jyo Jyo Saku ranking.
The blade was polished by a higher-ranking polisher
Habaki:　Gold foiled single Habaki.
Blade length:　70.6　cm or 27.7inches.
Sori : 2.0 cm or 0.78inches.
Mekugi : 　1
Width at the hamachi: 2.94 cm or 1.15 inches.
Width at the Kissaki: 2.05 cm or 0.80 inches.
Kasane : 0.68 cm or 0.26 inches.
The weight of the sword 690 grams.
Era : Edo period Kanbun era.
Shape: The blade has wide and thick with deep Sori and longer Kissaki
healthy good looking shape.
Jigane: Koitame hada well grained with Jinie attach beautiful, nice Hizen texture which is
called Konuka hada.
Hamon: The Hamon is very similar to first-generation 2nd generation Masahiro. From Hamachi is Suguha and then Gunome Midare.
which likes cumulonimbus clouds floating in the summer sky.

Special feature: Ichi Hizen Dewa Kami Yukihiro was the younger brother of first-generation Tokihiro and called Kurobe at Keian 3rd. he studied Holland iron at Nagasaki. He was got the Name Dewa Daijo when he was 32, 1648. Got Dewa Kami when he was 47, 1663. And he was dead when he was 66.

From Aoi Art: In my opinion, he is the best Shinto swordsmith. He was interested in Holland iron and usually use Holland iron, which was a very rare iron at this time to make his original swords.

NBTHK Tokubetsu Hozon Token
Aoi Art estimation paper: whole Oshigata.