This is a wakizashi attributed to the Koto period Jō-saku (high-grade) swordsmith Hiromasa of the Soshu school. It features a blade length of 47.7cm with an old polish and comes with an elaborate koshirae. The blade has a distinctive hamon with small midare and togari-ba, showing a deep interplay of nie and nioi, and an active jigane with itame, nagare-mokume, and masame. It has passed NBTHK Hozon certification.
mumei · Soshu · Muromachi · nagasa 47.7cm · sori 0.8cm




Soshu-den · Sagami
18 pieces on the market now
Within the province of Sagami, where Masamune and his successors had set the Soshu-den on its course, a late body of smiths carried that workmanship forward through the Muromachi period after the classic Nanbokucho masters had passed. These are the Sue-Soshu (末相州), the late Sagami line that took up the manner of Hiromitsu and Akihiro and worked it into the sixteenth century under the patronage of the Later Hojo of Odawara. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Fusamune總宗 | 1504-1521 | 5 |
| Tsunahiro綱廣 | 1532-1555 | 12 |
| Hiromasa廣正 | 1444-1456 | 4 |
| Kiyohira清平 | 1673-1681 | 4 |
| Tsunaie綱家 | 1532-1555 | 3 |
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 siteThis is a wakizashi attributed to the Koto period Jō-saku (high-grade) swordsmith Hiromasa of the Soshu school. It features a blade length of 47.7cm with an old polish and comes with an elaborate koshirae. The blade has a distinctive hamon with small midare and togari-ba, showing a deep interplay of nie and nioi, and an active jigane with itame, nagare-mokume, and masame. It has passed NBTHK Hozon certification.
mumei · Soshu · Muromachi · nagasa 47.7cm · sori 0.8cm




Soshu-den · Sagami
18 pieces on the market now
Within the province of Sagami, where Masamune and his successors had set the Soshu-den on its course, a late body of smiths carried that workmanship forward through the Muromachi period after the classic Nanbokucho masters had passed. These are the Sue-Soshu (末相州), the late Sagami line that took up the manner of Hiromitsu and Akihiro and worked it into the sixteenth century under the patronage of the Later Hojo of Odawara. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Fusamune總宗 | 1504-1521 | 5 |
| Tsunahiro綱廣 | 1532-1555 | 12 |
| Hiromasa廣正 | 1444-1456 | 4 |
| Kiyohira清平 | 1673-1681 | 4 |
| Tsunaie綱家 | 1532-1555 | 3 |
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 site