This katana is signed by Yokoyama Sukekane, a smith from Bizen Osafune active in the late Edo period. It features a straight hamon (suguha) and a tightly forged ko-itame hada, appearing almost muji. The blade comes with an uchigatana koshirae, including a lacquered saya with scattered mother-of-pearl, iron fuchi-kashira with nunome-zogan, and a sukashi iron tsuba with a paulownia crest. The sword is accompanied by an NBTHK Hozon Token certificate, though it has some minor flaws such as scuffs, slight rust spots, and damage to the saya.
mei · Osafune · Tenpo-Meiji (1834-1872) · nagasa 73.2cm · sori 1.4cm


















































Bizen-den · Bizen · around 1834-1872
Tōken Taikan top 60%
12 pieces on the market now
Bizen-den · Bizen
44 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 |
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 siteThis katana is signed by Yokoyama Sukekane, a smith from Bizen Osafune active in the late Edo period. It features a straight hamon (suguha) and a tightly forged ko-itame hada, appearing almost muji. The blade comes with an uchigatana koshirae, including a lacquered saya with scattered mother-of-pearl, iron fuchi-kashira with nunome-zogan, and a sukashi iron tsuba with a paulownia crest. The sword is accompanied by an NBTHK Hozon Token certificate, though it has some minor flaws such as scuffs, slight rust spots, and damage to the saya.
mei · Osafune · Tenpo-Meiji (1834-1872) · nagasa 73.2cm · sori 1.4cm


















































Bizen-den · Bizen · around 1834-1872
Tōken Taikan top 60%
12 pieces on the market now
Bizen-den · Bizen
44 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 |
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 site