This is a kozuka signed by Shomin, a student of the Kikugawa school who later joined the Tsuchiya school. It is made of shibuichi (though the seller suggests shakudo) and features a decoration of Prince Yamato Takeru with the Kusanagi No Tsurugi sword. The kozuka comes with an NBTHK Tokubetsu Hozon Tosogu certificate.
Certificate reading — 銘 正珉(花押)
mei · Kikugawa, Tsuchiya · Edo










Tsuchiya Shomin
Edo
Signed
Tokuho (NBTHK)
Machibori · Musashi (Edo)
2 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 |
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 site30-day refund policy. Items must be returned in original condition and packaging; customized products are non-returnable. 2-week inspection window with full item refund (shipping costs non-refundable). Customer pays return shipping.
This is a kozuka signed by Shomin, a student of the Kikugawa school who later joined the Tsuchiya school. It is made of shibuichi (though the seller suggests shakudo) and features a decoration of Prince Yamato Takeru with the Kusanagi No Tsurugi sword. The kozuka comes with an NBTHK Tokubetsu Hozon Tosogu certificate.
Certificate reading — 銘 正珉(花押)
mei · Kikugawa, Tsuchiya · Edo










Tsuchiya Shomin
Edo
Signed
Tokuho (NBTHK)
Machibori · Musashi (Edo)
2 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 |
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 site30-day refund policy. Items must be returned in original condition and packaging; customized products are non-returnable. 2-week inspection window with full item refund (shipping costs non-refundable). Customer pays return shipping.