AS10285 Katana:Izumi no Kami (partially cut) (Fujiwara Kunisada, First Generation)(NBTHK Hozon Token) (Tsuba: NBTHK Tokubetsu Kicho Tosogu)

Katana in Shirasaya with Koshirae (NBTHK Hozon Token)
(Tsuba: NBTHK Tokubetsu Kicho Tosogu)

Signature: Izumi no Kami (partially cut) (Fujiwara Kunisada, First Generation)
和泉守(以下切)(藤原国貞・初代)

Sayagaki by Mr. Tanobe:
Sesshu Izumi no Kami Fujiwara Kunisada.
Although suriage (shortened), the three characters “Izumi no Kami” remain.
This work is attributed to “Oyakunisada” — the teacher and de facto mentor of Inoue Shinkai.
It also carries stylistic traits inherited from Echigo no Kami Kuni–.
Blade length: 2 shaku 1 sun 8 bu (approx.).
Inscription by Tanzan Hendō.

Shinto: Jyojyo Saku, Ōwazamono, Settsu Province
We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku.
This work is ranked as Jyojyo Saku among the works by Izumi no Kami (partially cut) Fujiwara Kunisada (First Generation).
Habaki: Single-layered made of shakudo.
Blade Length: 2 shaku 1 sun 9 bu – 66.3 cm (26.10 in)
Curvature: 5 bu – 1.5 cm (0.59 in)
Mekugi Holes: 3
Width at Base (Motohaba): [cm not specified] Width at Tip (Sakihaba): [cm not specified] Thickness (Kasane): [cm not specified] Sword Weight: 735 g
Era: Edo period, around Kanbun era (1661–1673)
Shape:
This sword has been suriage (shortened).
It has a slightly wide body, thick kasane, moderate curvature, and an extended kissaki, forming a well-balanced shape.
Jigane:
Well-forged ko-itame hada with fine and refined texture.
Hamon:
Nie-deki mixed with notare.
The boshi is midare-komi (irregular turn-back into the tip).

Features: The signature “Sesshu Izumi no Kami Fujiwara Kunisada” refers to the first-generation Kunisada, also known as “Oyakunisada”.
This sword has been shortened, but the signature remains.
Kunisada was born in Hyuga and later became a disciple of Echigo no Kami Kuniyuki.
Although once believed to have studied under Kunihiro, this seems to be a mistake.
In Genna 9 (1623), he received the title “Izumi no Kami”.
In his later years, due to ill health, many works were made by his son, the second-generation Shinkai, as dai-saku (substitute work).
He passed away on May 5th of Keian 5 (1652) at the age of 63.

Koshirae:
Tsuba: Mokko-shaped shakudo nanakoji tsuba with high-relief carving of floral motifs. Mumei(Mino school)
Fuchikashira: Shibuichi with engraved cloud motifs.
Kurikata: Shakudo with cloud motifs.
Saya (Scabbard): Black lacquered inrō-kizami saya.
Kojiri: Shakudo with engraved cloud motifs.
Menuki: Family crest design with gold inlay.

NBTHK Hozon Token
Tsuba: NBTHK Tokubetsu Kicho Tosogu
Aoi Art estimation paper
Whole Oshigata