This is an iron tsuba featuring a 'Shinkiro Zu' (Mirage Design), signed by Sayasu Chika of Bushu. It is an early work by Sayasu Chika, made before his transition to the Nara style, still showing influences from his Shonai period. The design depicts a mirage emerging from the breath of a giant clam, executed with careful carving and inlay work.
Certificate reading — 銘 武州住 左安親作
mei · Bunka-Bunsei (c.1804-1830)







Tsuchiya Yasuchika
Bunka-Bunsei (c.1804-1830)
Musashi
Signed
Hozon (NBTHK)
Machibori · Hitachi (Mito) · around 1804-1830
4 pieces on the market now
Machibori · Musashi (Edo)
13 pieces on the market now
The Tsuchiya school is a branch of the Nara kinkō tradition, established in Edo (Musashi Province) by Tsuchiya Yasuchika, counted among the Nara Sansaku (Three Great Masters of Nara). Six generations of main-line heads carried the name Yasuchika (安親), perpetuating a continuous workshop lineage from the Genroku era through the late Edo period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Yasuchika安親 | 1804-1830 | 0 |
| Yasuchika安親 | 1718-1778 | 0 |
| Yasunari安成 | — | 0 |
| Yasunori安則 | — | 0 |
| Kunichika国親 | — | 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 siteFor one-of-a-kind items such as swords, sword fittings, and antiques, please contact us about a return within 3 days of the item's arrival and ship it back within 8 days. Refunds are issued the same day the returned item arrives.
This is an iron tsuba featuring a 'Shinkiro Zu' (Mirage Design), signed by Sayasu Chika of Bushu. It is an early work by Sayasu Chika, made before his transition to the Nara style, still showing influences from his Shonai period. The design depicts a mirage emerging from the breath of a giant clam, executed with careful carving and inlay work.
Certificate reading — 銘 武州住 左安親作
mei · Bunka-Bunsei (c.1804-1830)







Tsuchiya Yasuchika
Bunka-Bunsei (c.1804-1830)
Musashi
Signed
Hozon (NBTHK)
Machibori · Hitachi (Mito) · around 1804-1830
4 pieces on the market now
Machibori · Musashi (Edo)
13 pieces on the market now
The Tsuchiya school is a branch of the Nara kinkō tradition, established in Edo (Musashi Province) by Tsuchiya Yasuchika, counted among the Nara Sansaku (Three Great Masters of Nara). Six generations of main-line heads carried the name Yasuchika (安親), perpetuating a continuous workshop lineage from the Genroku era through the late Edo period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Yasuchika安親 | 1804-1830 | 0 |
| Yasuchika安親 | 1718-1778 | 0 |
| Yasunari安成 | — | 0 |
| Yasunori安則 | — | 0 |
| Kunichika国親 | — | 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 siteFor one-of-a-kind items such as swords, sword fittings, and antiques, please contact us about a return within 3 days of the item's arrival and ship it back within 8 days. Refunds are issued the same day the returned item arrives.