This is a breathtakingly beautiful mumei tanto from the Koto era, authenticated by Sato Kanzan and certified by the NBTHK as an authentic work by Sanjo Yoshinori. It features an unokubi construction with mizuki grooves and a well-refined itame hada with a notare hamon. The tanto comes with a Hozon certificate and is housed in a shirasaya.
Certificate reading — 無銘（三条吉則）
NihontoWatchmumei · Sanjo · Muromachi · nagasa 38.2cm · sori 0.1cm
Yamashiro-den · Kyoto
15 pieces on the market now
The Heianjō school (平安城) of swordsmiths represents the principal lineage of Kyōto sword production during the Muromachi period. "Heianjō" is the classical name for Kyōto (Heian-kyō), and the school's smiths — resident in the Sanjō district of the capital — signed variously with the 平安城 (Heianjō) and 三条 (Sanjō) prefixes, a usage that has often caused them to be confused with the far earlier Sanjō school of Munechika. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Nagayoshi長吉 | 1469-1492 | 15 |
| Yoshinori吉則 | 1469-1487 | 3 |
| Nagayoshi長吉 | 1449-1452 | 0 |
| Nobusada信貞 | 1346-1370 | 0 |
| Yoshinaga吉長 | 1381-1384 | 0 |
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 siteAs a general rule, returns/exchanges are not accepted on Japanese sword orders unless damaged upon delivery. Other items: returns/exchanges accepted within 7 days of delivery. Cancellation for personal reasons incurs a 30% restocking fee (70% refunded). Return shipping must be prepaid and insured by the buyer; shipping/handling fees are non-refundable. Contact katana@tozando.co.jp to initiate a return.
This is a breathtakingly beautiful mumei tanto from the Koto era, authenticated by Sato Kanzan and certified by the NBTHK as an authentic work by Sanjo Yoshinori. It features an unokubi construction with mizuki grooves and a well-refined itame hada with a notare hamon. The tanto comes with a Hozon certificate and is housed in a shirasaya.
Certificate reading — 無銘（三条吉則）
NihontoWatchmumei · Sanjo · Muromachi · nagasa 38.2cm · sori 0.1cm
Yamashiro-den · Kyoto
15 pieces on the market now
The Heianjō school (平安城) of swordsmiths represents the principal lineage of Kyōto sword production during the Muromachi period. "Heianjō" is the classical name for Kyōto (Heian-kyō), and the school's smiths — resident in the Sanjō district of the capital — signed variously with the 平安城 (Heianjō) and 三条 (Sanjō) prefixes, a usage that has often caused them to be confused with the far earlier Sanjō school of Munechika. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Nagayoshi長吉 | 1469-1492 | 15 |
| Yoshinori吉則 | 1469-1487 | 3 |
| Nagayoshi長吉 | 1449-1452 | 0 |
| Nobusada信貞 | 1346-1370 | 0 |
| Yoshinaga吉長 | 1381-1384 | 0 |
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 siteAs a general rule, returns/exchanges are not accepted on Japanese sword orders unless damaged upon delivery. Other items: returns/exchanges accepted within 7 days of delivery. Cancellation for personal reasons incurs a 30% restocking fee (70% refunded). Return shipping must be prepaid and insured by the buyer; shipping/handling fees are non-refundable. Contact katana@tozando.co.jp to initiate a return.
