This antique Japanese katana is signed by the 8th generation Hizen Koku Tadayoshi, active during the Tenpo era (1830-1844) of the late Edo period. Certified by NTHK Kanteisho, this blade showcases the renowned craftsmanship of the Hizen province, known for its smooth Konuka Hada steel. It comes complete with koshirae mountings, a shirasaya case, and a traditional sword carrying case.
mei · Hizen Tadayoshi · Edo · nagasa 68.1cm · sori 2.1cm






















Shinto · Hizen · around 1830-1844
Fujishiro Chu-jo saku · Tōken Taikan top 76%
5 pieces on the market now
Shinto · Hizen
122 pieces on the market now
The Hizen Tadayoshi school began with a single domain commission. In Keicho 1 (1596) the Nabeshima of Hizen ordered Hashimoto Shinzaemon, the smith who would sign Tadayoshi, up to Kyoto with the carver Munenaga; there he entered the gate of Umetada Myoju and studied forging while Munenaga learned the chisel. The two returned to the province in Keicho 3 (1598), and Tadayoshi settled in the castle town below Saga, where under the domain's patronage the line grew into the dominant sword-making house of Kyushu. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Tadayoshi忠吉 | 1596-1632 | 123 |
| Tadayoshi忠吉 | 1662-1681 | 58 |
| Tadahiro忠廣 | 1624-1693 | 169 |
| Masahiro正廣 | 1624-1655 | 32 |
| Tadakuni忠國 | 1648-1652 | 32 |
The NTHK’s principal certificate, issued for a blade of considerable quality. It confirms a genuine signature, or, for an unsigned (mumei) work, records the judges’ attribution to a smith or school. The paper carries a detailed worksheet with a numerical point score.
The NTHK (Nihon Tōken Hozon Kai, the Society for the Preservation of the Japanese Sword) is the oldest of Japan’s sword-appraisal bodies, founded in 1910, decades before the NBTHK. After the death of its long-serving head it divided into two successor societies, the NTHK and the NTHK-NPO, both of which continue to hold shinsa. NTHK certificates are known for a detailed worksheet that records a numerical point score alongside the judges’ written opinion, and the society is especially respected for its attribution of unsigned (mumei) work.
Returns/exchanges limited to defects caused by shipping (except willful misconduct or gross negligence by the company); customers must contact within 72 hours of receiving the product.
This antique Japanese katana is signed by the 8th generation Hizen Koku Tadayoshi, active during the Tenpo era (1830-1844) of the late Edo period. Certified by NTHK Kanteisho, this blade showcases the renowned craftsmanship of the Hizen province, known for its smooth Konuka Hada steel. It comes complete with koshirae mountings, a shirasaya case, and a traditional sword carrying case.
mei · Hizen Tadayoshi · Edo · nagasa 68.1cm · sori 2.1cm






















Shinto · Hizen · around 1830-1844
Fujishiro Chu-jo saku · Tōken Taikan top 76%
5 pieces on the market now
Shinto · Hizen
122 pieces on the market now
The Hizen Tadayoshi school began with a single domain commission. In Keicho 1 (1596) the Nabeshima of Hizen ordered Hashimoto Shinzaemon, the smith who would sign Tadayoshi, up to Kyoto with the carver Munenaga; there he entered the gate of Umetada Myoju and studied forging while Munenaga learned the chisel. The two returned to the province in Keicho 3 (1598), and Tadayoshi settled in the castle town below Saga, where under the domain's patronage the line grew into the dominant sword-making house of Kyushu. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Tadayoshi忠吉 | 1596-1632 | 123 |
| Tadayoshi忠吉 | 1662-1681 | 58 |
| Tadahiro忠廣 | 1624-1693 | 169 |
| Masahiro正廣 | 1624-1655 | 32 |
| Tadakuni忠國 | 1648-1652 | 32 |
The NTHK’s principal certificate, issued for a blade of considerable quality. It confirms a genuine signature, or, for an unsigned (mumei) work, records the judges’ attribution to a smith or school. The paper carries a detailed worksheet with a numerical point score.
The NTHK (Nihon Tōken Hozon Kai, the Society for the Preservation of the Japanese Sword) is the oldest of Japan’s sword-appraisal bodies, founded in 1910, decades before the NBTHK. After the death of its long-serving head it divided into two successor societies, the NTHK and the NTHK-NPO, both of which continue to hold shinsa. NTHK certificates are known for a detailed worksheet that records a numerical point score alongside the judges’ written opinion, and the society is especially respected for its attribution of unsigned (mumei) work.
Returns/exchanges limited to defects caused by shipping (except willful misconduct or gross negligence by the company); customers must contact within 72 hours of receiving the product.