This is a katana signed by Yokoyama Kaga-no-suke Fujiwara Sukenaga from Bizen Osafune, dated Tenpō 14 (1843). The blade exhibits a deeply curved Tachi-style form with pronounced Koshi-zori and a beautiful Ko-mokume hada. The hamon is an elegant Nioi-based Chōji-midare, flourishing across the blade like a profusion of blooming flowers.
Certificate reading — 銘 横山加賀介藤原祐永（祐則代銘）天保十二年二月日（菊紋）一 備前長船住
NihontoWatchmei · Yokoyama · Tenpo (1830-1844) · nagasa 68.8cm · sori 3.5cm
Bizen-den · Bizen
40 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sukenobu祐信 | 1830-1844 | 0 |
| Suketaka祐高 | 1865-1868 | 0 |
| Sukeharu祐春 | 1864-1865 | 0 |
| Sukehiro祐廣 | 1854-1860 | 0 |
| Sukekane祐包 | 1868-1912 | 0 |
The Edo period (1615 to 1868)
Under the Tokugawa peace the daishō became a regulated uniform, and demand gathered in the castle towns, above all Edo itself. The craft split two ways: brilliant display work for connoisseurs, and tested blades whose cutting results were sometimes inlaid in gold.
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
The NBTHK (Nihon Bijutsu Tōken Hozon Kyōkai, the Society for the Preservation of Japanese Art Swords) is a public-interest incorporated foundation founded in 1948 and supervised by Japan’s Agency for Cultural Affairs (Bunkachō); it is based at the Japanese Sword Museum in Tokyo. Its expert panels physically examine each submitted work (shinsa) and issue a certificate (kanteishō) ranking it by artistic and historical merit. NBTHK papers are the most widely recognized standard of authentication for Japanese swords and fittings.
NBTHK official siteFor a return, please contact us within 7 days of the item's arrival. If specification changes such as dimensions were made at the customer's request, a return cannot be accepted. Shipping and transfer fees are the customer's responsibility.
¥1,000,000
