This is an Ukubizukuri tanto attributed to Soshu Tsunehiro, a descendant of Masamune, from the Shin-Shinto period. It features a spectacular hamon with gunome-midare, hitatsura, and tobiyaki, along with active nie, nioi, kinsuji, and sunagashi. The blade comes with a koshirae featuring intricate stone-pattern fittings and is certified as Hozon Token by the NBTHK.
mumei · Soshu · Bunsei (1818-1830) · nagasa 24cm




Sagami · around 1818-1830
Fujishiro Chu saku · Tōken Taikan top 95%
2 pieces on the market now
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 is an Ukubizukuri tanto attributed to Soshu Tsunehiro, a descendant of Masamune, from the Shin-Shinto period. It features a spectacular hamon with gunome-midare, hitatsura, and tobiyaki, along with active nie, nioi, kinsuji, and sunagashi. The blade comes with a koshirae featuring intricate stone-pattern fittings and is certified as Hozon Token by the NBTHK.
mumei · Soshu · Bunsei (1818-1830) · nagasa 24cm




Sagami · around 1818-1830
Fujishiro Chu saku · Tōken Taikan top 95%
2 pieces on the market now
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