This is a Ko-Tosho tsuba from the Muromachi period. It has a simple, elegant design with minimal openwork and a slightly raised surface. It is said to be the origin of iron tsuba for uchigatana.
Certificate reading — 無銘（古刀匠）
NihontoWatch
Ko-tosho School
Muromachi
Unsigned
Hozon (NBTHK)
Tosho-Katchushi
Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.
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 siteCustomer-initiated returns accepted within two days of arrival; return shipping paid by customer and fees non-refundable. Returns/refunds unavailable for overseas deliveries.
This is a Ko-Tosho tsuba from the Muromachi period. It has a simple, elegant design with minimal openwork and a slightly raised surface. It is said to be the origin of iron tsuba for uchigatana.
Certificate reading — 無銘（古刀匠）
NihontoWatchKo-tosho School
Muromachi
Unsigned
Hozon (NBTHK)
Tosho-Katchushi
Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.
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 siteCustomer-initiated returns accepted within two days of arrival; return shipping paid by customer and fees non-refundable. Returns/refunds unavailable for overseas deliveries.
