AS25334 Katana：Dewa Kami Fujiwara Kuniyasu.(NBTHK Hozon Token)

Ordering number:AS25334

Katana in Shirasaya (NBTHK Hozon Token).

Signature: Dewa Kami Fujiwara Kuniyasu.
出羽守藤原国保

Sayagaki: Dewa no Kami Fujiwara Kuniyasu.
Blade Length: 2 shaku 2 sun 8 bu 2 rin.
Showa Shin-gai year (1971), 4th month.
Written by Dr. Kanzan (with kao).

Tenna period: Ryo Saku.
(We divide 4 sections for each sword as Saijyo Saku, Jyojyo Saku, Jyo Saku and Regular Saku).
The workmanship of this piece is ranked as Jyojyo Saku among works by Dewa no Kami Fujiwara Kuniyasu.
Habaki: Gold-foiled single habaki.
Blade Length: 69.14 cm (27.22 in).
Curvature: 1.21 cm (0.48 in).
Mekugi Hole: 1.
Width at Base (Motohaba): 2.44 cm (0.96 in).
Width at Tip (Sakihaba): 2.27 cm (0.89 in).
Thickness of rim (Kasane): 0.69 cm (0.27 in).
Sword Weight: 810 grams.
Era: Mid Edo period, around the Tenna era (circa 1681–1684).
Shape: Wide mihaba with thick kasane, moderate curvature, and a slightly extended kissaki.
Jigane: Ko-itame hada mixed with masame, with ji-nie present.
Hamon: Suguha style with well-working ko-ashi, a slightly deep nioiguchi, and mixed nijuba.

Features: Dewa no Kami Fujiwara Kuniyasu was originally from Yamato and lived in Edo.
He was a disciple of Kaneyasu and is said to be a descendant of Tegai Kanenaga.

Aoi Art’s Comment: A suguha-based work with active ko-ashi, attributed to a lineage said to descend from Tegai Kanenaga.
The jihada is clearly visible and well forged.

Historical Background: The Tenna era of the Edo period lasted from 1681 to 1684, corresponding to the early reign of the 5th shogun, Tokugawa Tsunayoshi.
This period is known as the “Tenna no Chi,” situated after the Enpo era and before the Jokyo era.
During this time, the Buke Shohatto was revised to emphasize Confucian ideals such as civil and martial virtues, loyalty, filial piety, and proper etiquette.
In 1683, the Great Fire of Tenna occurred, a major conflagration in Edo.

NBTHK Hozon Token.
AoiArt estimation paper: Whole Oshigata.