After the Ōnin War broke the Ashikaga order, a century of Sengoku warfare armed nearly every province in Japan. The era rewards a discriminating eye: routine work exists in quantity, and beside it stand custom blades of the first rank.
This is a tanto by Taira Masumori, a smith from the Takamori school in Bungo province, active during the late Muromachi period (circa 1532). It features a small hirazukuri form with a sugu-ha hamon and itame jigane. The blade comes with a red lacquered aikuchi koshirae and is accompanied by an NBTHK Tokubetsu Hozon Token certificate.














Bungo · around 1555-1558
Tōken Taikan top 91%
The Muromachi period (1392 to 1573)
After the Ōnin War broke the Ashikaga order, a century of Sengoku warfare armed nearly every province in Japan. The era rewards a discriminating eye: routine work exists in quantity, and beside it stand custom blades of the first rank.
A Hozon-certified blade judged to show notably superior workmanship and a better state of preservation. The bar is higher: re-tempered blades and most unsigned Muromachi/Edo works are excluded.
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 siteIf the item is not to your liking, please feel free to return it for any reason. Return shipping is the customer's responsibility. After the item arrives and we confirm it is in the same condition as at the time of sale, we transfer the refund to your designated account the same day. Purchases made at the store are outside the scope of cooling-off.