This is a quality Katana sword attributed to So-shu Hiromasa, a renowned swordsmith from the late Nambokucho to early Muromachi era (1370-1440s). The blade displays the dramatic Hitatsura (entirely tempered) pattern, iconic of Hiromasa from Soshu province, and comes in a complete set of stunning antique, ornate mounting, including all metal fittings and an open-work Tsuba hand guard finished with gold.
mumei · So-Shu · Eiwa (1375-1379) ND · nagasa 68.2cm · sori 1.97cm



























Soshu-den · Sagami
17 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 siteReturns accepted only for errors/damage: damaged or incorrect items reported by email within 10 calendar days; defective goods within 30 calendar days.
This is a quality Katana sword attributed to So-shu Hiromasa, a renowned swordsmith from the late Nambokucho to early Muromachi era (1370-1440s). The blade displays the dramatic Hitatsura (entirely tempered) pattern, iconic of Hiromasa from Soshu province, and comes in a complete set of stunning antique, ornate mounting, including all metal fittings and an open-work Tsuba hand guard finished with gold.
mumei · So-Shu · Eiwa (1375-1379) ND · nagasa 68.2cm · sori 1.97cm



























Soshu-den · Sagami
17 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 siteReturns accepted only for errors/damage: damaged or incorrect items reported by email within 10 calendar days; defective goods within 30 calendar days.