Ordering number: 23060
Katana in Shirasaya with Koshirae(NBTHK Tokubetsu Hozon Token)
Signature: Ichi Hizen Kuni Dewa Kamo Yukihiro(first generation)
Shinto Jyo saku: Hizen
(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.
Habaki: Copper single Habaki
The blade is polished.
Blade length:72.0cm or 28.34inches.
Sori:1.5cm or 0.59inches.
Width at the hamachi:3.16cm or 1.24inches.
Width at the Kissaki:2.01cm or 0.79inches.
Kasane:0.67cm or 0.26inches.
The weight of the sword:725grams
Era: Around the Kanbun era, the Edo period
Shape: The blade is broad and thick with slightly longer Kissaki. Kanei shape.
Jigane: Koitamehada is very dense. Hizen Jigane.
Hamon: Suguhadeki with deep Nioikuchi and Gunome.
Special feature: A younger brother of Masahiro 1st. He succeeded to Dewa Daijo in Shoho 5 and Dewa Kami in Kanbun 3. He passed away at the age of 66. He made many works similar to Masahiro.
Tsuba: Iron Tsuba. Waves are engraved. Mei- Umetada(not guaranteed)
Fuchikashira: Shakudo Nanako plate. Music instruments are engraved with gold color.
Saya: Black Roiro Saya
Menuki: Silver Ishimeji plate. Kuyomon family crest is engraved with gold color.
From Aoi Art: Ichi Hizen Kuni Dewa Kami Yukihiro(1st). Hizen Jigane is beautiful. The blade has Suguha and Gunome Hamon with round Boshi. This swordsmith is well-known as a man who learned dutch iron. In those days, it was very difficult to make swords with dutch iron, technically and also because it was very rare. Yasutsugu is also said to use dutch iron.
NBTHK Tokubetsu Hozon Token paper
Aoi Art estimation Paper: whole Oshigata by Ayaka Tsuruta