This is a mumei tanto attributed to the Shinshinto Kaifu school from Awa province, dating to the late Edo period. It features a robust yoroi-doshi shape with a nagasa of 21.0cm, a masame hada, and a suguha hamon with active nioiguchi. The tanto comes with a silver foil habaki, shirasaya, and an aikuchi koshirae with shakudo fittings, accompanied by an NBTHK Hozon Token certificate.
mumei · Kaifu · 1394-1573 · nagasa 21cm















Wakimono · Awa
5 pieces on the market now
The Kaifu group (Kaifu-ha, 海部) takes its name from the Kaifu district of Awa Province on Shikoku, in the region of present-day Tokushima. The Kotō Meizukushi and the Kokon Meizukushi place the founder as Kaifu Tarō Ujiyoshi (海部太郎氏吉), set around the Kōryaku era (1379-1381), and record a second strand said to descend from a pupil of Naminohira around the Ōan era (1368-1375) who signed with the single character Fuji (藤). Learn more →
| Smith | Era | Designated |
|---|---|---|
| Ujiyoshi氏吉 | 1492-1501 | 3 |
| Ujiyoshi氏吉 | 1596-1615 | 2 |
| Ujishige氏重 | 1655-1658 | 2 |
| Yasunaga泰長 | 1521-1528 | 1 |
| Yasuyoshi泰吉 | 1504-1521 | 1 |
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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).
This is a mumei tanto attributed to the Shinshinto Kaifu school from Awa province, dating to the late Edo period. It features a robust yoroi-doshi shape with a nagasa of 21.0cm, a masame hada, and a suguha hamon with active nioiguchi. The tanto comes with a silver foil habaki, shirasaya, and an aikuchi koshirae with shakudo fittings, accompanied by an NBTHK Hozon Token certificate.
mumei · Kaifu · 1394-1573 · nagasa 21cm















Wakimono · Awa
5 pieces on the market now
The Kaifu group (Kaifu-ha, 海部) takes its name from the Kaifu district of Awa Province on Shikoku, in the region of present-day Tokushima. The Kotō Meizukushi and the Kokon Meizukushi place the founder as Kaifu Tarō Ujiyoshi (海部太郎氏吉), set around the Kōryaku era (1379-1381), and record a second strand said to descend from a pupil of Naminohira around the Ōan era (1368-1375) who signed with the single character Fuji (藤). Learn more →
| Smith | Era | Designated |
|---|---|---|
| Ujiyoshi氏吉 | 1492-1501 | 3 |
| Ujiyoshi氏吉 | 1596-1615 | 2 |
| Ujishige氏重 | 1655-1658 | 2 |
| Yasunaga泰長 | 1521-1528 | 1 |
| Yasuyoshi泰吉 | 1504-1521 | 1 |
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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).