This kozuka depicts Jurojin, one of the Seven Lucky Gods, who represents longevity and wisdom. The front of the shibuichi plate features a detailed Jurojin in high relief carving with inlaid colored enamel, while the back shows a deer in katakiri-bori with gold flat inlay. It is attributed to Mito school and passed the Hozon Tosogu shinsa in November 2025.

















Mito School
Edo
Hitachi
Unsigned
Hozon (NBTHK)
Machibori · Hitachi
80 pieces on the market now
The Mito school of sword-fitting makers emerged as an officially sponsored tradition in the domains of the Tokugawa family's Mito branch, achieving particular prominence in the late Edo period. The school's lineage traces through Shinozaki Katsushige and his successors, who served as goyō horimonoshi (official engravers) to the domain. Unlike the privately patronized workshops of Edo and Kyoto, Mito metalworkers operated within a system of domain service, producing both presentation fittings for formal occasions and richly decorated works for commission. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Katsuhira勝平 | 1804-1886 | 13 |
| Shomin勝珉 | 1844-1915 | 11 |
| Teikan貞幹 | — | 5 |
| Tomoyoshi友善 | 1716-c.1920 | 0 |
| Unno Bishu海野美秋 | — | 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.
This kozuka depicts Jurojin, one of the Seven Lucky Gods, who represents longevity and wisdom. The front of the shibuichi plate features a detailed Jurojin in high relief carving with inlaid colored enamel, while the back shows a deer in katakiri-bori with gold flat inlay. It is attributed to Mito school and passed the Hozon Tosogu shinsa in November 2025.

















Mito School
Edo
Hitachi
Unsigned
Hozon (NBTHK)
Machibori · Hitachi
80 pieces on the market now
The Mito school of sword-fitting makers emerged as an officially sponsored tradition in the domains of the Tokugawa family's Mito branch, achieving particular prominence in the late Edo period. The school's lineage traces through Shinozaki Katsushige and his successors, who served as goyō horimonoshi (official engravers) to the domain. Unlike the privately patronized workshops of Edo and Kyoto, Mito metalworkers operated within a system of domain service, producing both presentation fittings for formal occasions and richly decorated works for commission. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Katsuhira勝平 | 1804-1886 | 13 |
| Shomin勝珉 | 1844-1915 | 11 |
| Teikan貞幹 | — | 5 |
| Tomoyoshi友善 | 1716-c.1920 | 0 |
| Unno Bishu海野美秋 | — | 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.