This is a Ko-Tosho tsuba from the early Muromachi period, featuring a sukashi design of three fans. It exhibits a deep iron patina characteristic of early Ko-Tosho work for a tachi. The tsuba is certified as Hozon by the NBTHK, attesting to its authenticity and preservation worthiness.
mumei · Ko-Tosho · Muromachi




Muromachi
Unsigned
Hozon (NBTHK)
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 sitePurchases are final and items cannot be returned unless otherwise stated.


This is a Ko-Tosho tsuba from the early Muromachi period, featuring a sukashi design of three fans. It exhibits a deep iron patina characteristic of early Ko-Tosho work for a tachi. The tsuba is certified as Hozon by the NBTHK, attesting to its authenticity and preservation worthiness.
mumei · Ko-Tosho · Muromachi




Muromachi
Unsigned
Hozon (NBTHK)
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 sitePurchases are final and items cannot be returned unless otherwise stated.

