Wakizashi made by Katsumura Tokukatsu who lived in Suifu (Hitachi province). The blade is likely from the Shin-Shinto period. This item is sold.
Certificate reading — 無銘(赤坂)













Akasaka School
early Edo (c. 1620)
Hitachi
Signed
Hozon
Iron-tsuba · Edo
73 pieces on the market now
The Akasaka school comprises a lineage of iron tsubako (鐔工) who relocated from Kyoto to the Akasaka district of Edo at the beginning of the Edo period, thereafter flourishing until the end of the Tokugawa shogunate. The founding master, Shozaemon Tadamasa (忠正), is traditionally held to have been active from the Kan'ei to Meireki eras (1624--1658); a genealogical statement (yui-shogaki) submitted during the Bunsei era records that shodai Tadamasa died in Meireki 3 (1657) and nidai Tadamasa in Enpo 5 (1677). Learn more →
| Smith | Era | Designated |
|---|---|---|
| Tadamasa忠正 | 1624-1658 | 7 |
| Tadashige忠重 | 1730-1816 | 5 |
| Tadatoki忠時 | 1704-1764 | 0 |
| Juchiku/Toshitake寿竹 | — | 0 |
| Tadanori忠則 | 1730-1780 | 0 |
Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.
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 siteDomestic: items may be returned within 7 days in original condition for a full refund (buyer covers transport). Overseas orders: no-refunds, no-returns.
Wakizashi made by Katsumura Tokukatsu who lived in Suifu (Hitachi province). The blade is likely from the Shin-Shinto period. This item is sold.
Certificate reading — 無銘(赤坂)













Akasaka School
early Edo (c. 1620)
Hitachi
Signed
Hozon
Iron-tsuba · Edo
73 pieces on the market now
The Akasaka school comprises a lineage of iron tsubako (鐔工) who relocated from Kyoto to the Akasaka district of Edo at the beginning of the Edo period, thereafter flourishing until the end of the Tokugawa shogunate. The founding master, Shozaemon Tadamasa (忠正), is traditionally held to have been active from the Kan'ei to Meireki eras (1624--1658); a genealogical statement (yui-shogaki) submitted during the Bunsei era records that shodai Tadamasa died in Meireki 3 (1657) and nidai Tadamasa in Enpo 5 (1677). Learn more →
| Smith | Era | Designated |
|---|---|---|
| Tadamasa忠正 | 1624-1658 | 7 |
| Tadashige忠重 | 1730-1816 | 5 |
| Tadatoki忠時 | 1704-1764 | 0 |
| Juchiku/Toshitake寿竹 | — | 0 |
| Tadanori忠則 | 1730-1780 | 0 |
Certifies a genuine fitting worth preserving: a correct signature, or, if unsigned, an identifiable era and school, with recognized artistic and craft value.
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 siteDomestic: items may be returned within 7 days in original condition for a full refund (buyer covers transport). Overseas orders: no-refunds, no-returns.