This kozuka features a design of a woman beating cloth on a fulling block (kinuta), inspired by a poem by Minamoto no Toshiyori. Crafted by Ryusai Minkoku, a student of Ohara Sōyo and a Mito metalworker known for classical designs. The piece is made of oboro silver with high relief carving and flat inlay in gold, silver, and shakudo, depicting a moonlit scene reflected on a river.
mei · Mito · Edo

Yokoya School
Edo
Musashi
Signed
Hozon (NBTHK)
Machibori · Edo
98 pieces on the market now
The Yokoya school was the largest metalworking lineage of the Edo period, founded in the early seventeenth century when the first-generation Yokoya Soyo -- sometimes distinguished as "Sofu Soyo" or "Ko-Soyo" -- studied under Goto Injo Mitsutomi and established an independent atelier in Edo. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Somin宗珉 | — | 50 |
| Soyo宗與 | — | 14 |
| Soju宗壽 | — | 3 |
| Yasukiyo安精 | — | 0 |
| Yoshisada宜貞 | — | 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 siteIf, due to our fault, the item differs significantly from its proper condition, the item may be returned. Cooling-off is within one week of the item's arrival.
This kozuka features a design of a woman beating cloth on a fulling block (kinuta), inspired by a poem by Minamoto no Toshiyori. Crafted by Ryusai Minkoku, a student of Ohara Sōyo and a Mito metalworker known for classical designs. The piece is made of oboro silver with high relief carving and flat inlay in gold, silver, and shakudo, depicting a moonlit scene reflected on a river.
mei · Mito · Edo

Yokoya School
Edo
Musashi
Signed
Hozon (NBTHK)
Machibori · Edo
98 pieces on the market now
The Yokoya school was the largest metalworking lineage of the Edo period, founded in the early seventeenth century when the first-generation Yokoya Soyo -- sometimes distinguished as "Sofu Soyo" or "Ko-Soyo" -- studied under Goto Injo Mitsutomi and established an independent atelier in Edo. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Somin宗珉 | — | 50 |
| Soyo宗與 | — | 14 |
| Soju宗壽 | — | 3 |
| Yasukiyo安精 | — | 0 |
| Yoshisada宜貞 | — | 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 siteIf, due to our fault, the item differs significantly from its proper condition, the item may be returned. Cooling-off is within one week of the item's arrival.