NihontoWatchNihontoWatchTosho tsuba are said to be tsuba produced by swordsmiths as a side project while crafting swords, and among these, works judged to have been produced before the Muromachi period are called Ko-tosho tsuba. They possess a refined elegance, featuring well-forged tetsu-sabiji made extremely thin, formed into a maru-gata with a slight swelling only on the surface, and adding only minimal decoration such as slight ko-sukashi; they are considered to be the origin of the tetsu tsuba accompanied with uchigatana.
Certificate reading — 無銘（古刀匠）
NihontoWatchOffered by Iida Koendo
Ko-tosho School
Pre-Edo
Unsigned
Hozon (NBTHK)
As written by the shop
Machine translation from the shop's Japanese · may contain errors ·
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 siteFor returns at the customer's convenience, please notify us within two days of the item's arrival. Items that have been altered cannot be accepted. Return shipping is at the customer's expense. Costs other than the item price (bank transfer fees, cash-on-delivery fees, etc.) cannot be refunded. Items delivered overseas cannot be returned or refunded.
Price on request