This is a kozuka made by Itiryuken Masayoshi during the Edo era. It has been certified as Tokubetsu Hozon Tosogu by the NBTHK. The kozuka features a design of shukaido (begonia) and insects.
NihontoWatchmei · Edo
Ishiguro School
Edo
Signed
Tokuho (NBTHK)
Machibori · Edo
23 pieces on the market now
The Ishiguro school was founded by Ishiguro Masatsune, born in Horeki 10 (1760), who trained under Kato Naotsune and Yanagawa Naomasa within the broader Yokoya lineage before establishing an independent atelier that would become one of the most celebrated machibori ("town carving") workshops of the late Edo period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Masayoshi政美 | — | 29 |
| Masatsune政常 | — | 17 |
| Masaaki政明 | — | 19 |
| Koretsune是常 | — | 4 |
| Koreyoshi是美 | — | 4 |
A Hozon-certified fitting of notably superior craftsmanship and condition, often with signature or workmanship of high reference 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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).
This is a kozuka made by Itiryuken Masayoshi during the Edo era. It has been certified as Tokubetsu Hozon Tosogu by the NBTHK. The kozuka features a design of shukaido (begonia) and insects.
NihontoWatchmei · Edo
Ishiguro School
Edo
Signed
Tokuho (NBTHK)
Machibori · Edo
23 pieces on the market now
The Ishiguro school was founded by Ishiguro Masatsune, born in Horeki 10 (1760), who trained under Kato Naotsune and Yanagawa Naomasa within the broader Yokoya lineage before establishing an independent atelier that would become one of the most celebrated machibori ("town carving") workshops of the late Edo period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Masayoshi政美 | — | 29 |
| Masatsune政常 | — | 17 |
| Masaaki政明 | — | 19 |
| Koretsune是常 | — | 4 |
| Koreyoshi是美 | — | 4 |
A Hozon-certified fitting of notably superior craftsmanship and condition, often with signature or workmanship of high reference 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 siteNo cooling-off period or returns; refund only if the purchased sword is proven fake, capped at purchase price (excludes commission sales, accessories, auction items).
