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 Koto period tanto by Sanjo Nagayoshi, a representative smith of Yamashiro province during the late Muromachi period. It features a 'Yoroi-doshi' form with a tight, clear gunome-midare hamon and sakikai-yaki. The blade is adorned with exquisite horimono, including a Kurikara on the omote and a Sanmen Kannon with Sanskrit characters on the ura, showcasing Nagayoshi's skill as a master of blade carving.
mei · Sanjo · Muromachi · nagasa 18.2cm





Yamashiro-den · Yamashiro · around 1394-1428
Fujishiro Jo-jo saku · Tōken Taikan top 31%
1 piece on the market now
Where Nagayoshi stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Yamashiro-den · Kyoto
14 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. They are an entirely distinct, late group: its two representative masters, Heianjō Nagayoshi (平安城長吉, also read Chōkichi) and Sanjō Yoshinori (三条吉則, of the Fuse 布施 family), are counted as the leading makers of Muromachi-period Kyō-mono (Kyoto-made blades), carrying forward the capital's swordmaking after the Nanbokuchō-period Nobukuni and Hasebe lineages. Both names continued through several generations from the late Nanbokuchō era into the sixteenth century, and the smiths are known to have travelled to forge (desaku) in provinces such as Izumi, Mikawa, and Echizen during the late Muromachi period. The Heianjō style is dominated by a flamboyant hitatsura (full-temper) idiom adopted from Sōshū tradition: a foundation of large gunome-midare mixed with chōji, togariba, and yahazu-ba, with abundant tobiyaki and muneyaki spreading temper across the entire blade surface, nie adhering strongly, and sunagashi and kinsuji coursing through a bright, clear nioiguchi.
The finest examples are so accomplished that they are difficult to distinguish from late Sōshū (Sue-Sōshū) work. A quieter suguha- and ko-notare-based mode close to the Nobukuni tradition is also seen. High-quality horimono — kurikara, bonji, suken, and gomabashi — frequently accompany the blades. The school is not to be confused with the unrelated Heianjō-zōgan (平安城象嵌) inlay tradition of tōsōgu makers. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Nagayoshi長吉 | 1469-1492 | 15 |
| Yoshinori吉則 | 1469-1487 | 3 |
| Noriyoshi則吉 | 1469-1487 | 0 |
| Yoshinaga吉長 | 1381-1384 | 0 |
| Nagayoshi長吉 | 1449-1452 | 0 |
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.
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 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 Koto period tanto by Sanjo Nagayoshi, a representative smith of Yamashiro province during the late Muromachi period. It features a 'Yoroi-doshi' form with a tight, clear gunome-midare hamon and sakikai-yaki. The blade is adorned with exquisite horimono, including a Kurikara on the omote and a Sanmen Kannon with Sanskrit characters on the ura, showcasing Nagayoshi's skill as a master of blade carving.
mei · Sanjo · Muromachi · nagasa 18.2cm





Yamashiro-den · Yamashiro · around 1394-1428
Fujishiro Jo-jo saku · Tōken Taikan top 31%
1 piece on the market now
Where Nagayoshi stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Yamashiro-den · Kyoto
14 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. They are an entirely distinct, late group: its two representative masters, Heianjō Nagayoshi (平安城長吉, also read Chōkichi) and Sanjō Yoshinori (三条吉則, of the Fuse 布施 family), are counted as the leading makers of Muromachi-period Kyō-mono (Kyoto-made blades), carrying forward the capital's swordmaking after the Nanbokuchō-period Nobukuni and Hasebe lineages. Both names continued through several generations from the late Nanbokuchō era into the sixteenth century, and the smiths are known to have travelled to forge (desaku) in provinces such as Izumi, Mikawa, and Echizen during the late Muromachi period. The Heianjō style is dominated by a flamboyant hitatsura (full-temper) idiom adopted from Sōshū tradition: a foundation of large gunome-midare mixed with chōji, togariba, and yahazu-ba, with abundant tobiyaki and muneyaki spreading temper across the entire blade surface, nie adhering strongly, and sunagashi and kinsuji coursing through a bright, clear nioiguchi.
The finest examples are so accomplished that they are difficult to distinguish from late Sōshū (Sue-Sōshū) work. A quieter suguha- and ko-notare-based mode close to the Nobukuni tradition is also seen. High-quality horimono — kurikara, bonji, suken, and gomabashi — frequently accompany the blades. The school is not to be confused with the unrelated Heianjō-zōgan (平安城象嵌) inlay tradition of tōsōgu makers. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Nagayoshi長吉 | 1469-1492 | 15 |
| Yoshinori吉則 | 1469-1487 | 3 |
| Noriyoshi則吉 | 1469-1487 | 0 |
| Yoshinaga吉長 | 1381-1384 | 0 |
| Nagayoshi長吉 | 1449-1452 | 0 |
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.
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 siteCustomer-initiated returns accepted within two days of arrival; return shipping paid by customer and fees non-refundable. Returns/refunds unavailable for overseas deliveries.