This is a tsuba (sword guard) featuring scattered auspicious motifs. It is signed by Kongosai Gassan, indicating the maker. The piece is likely from the Edo period, showcasing the craftsmanship of the Gassan school.
NihontoWatch
Machibori · Yamashiro · around 1815-1875
1 piece on the market now
Matsuo Gassan was a late-Edo Kyoto metalwork artist of the Otsuki school. The records give his identity in full: his real name was Matsuo Karoku, he was born in Kyoto in Bunka 12 (1815) and died in Meiji 8 (1875) aged sixty-one, and he signed under the studio-go Kongosai and Tososhitei. They make him a pupil of Kawarabayashi Hideoki of the Otsuki school (the same teacher as Sasayama Tokuoki), and one record names him a fine hand who honed his skill alongside his fellow Hideoki pupils Tokuoki and Tenkodo Hidekuni. His ground and hand are the Otsuki house manner: shakudo, brass, iron and shibuichi grounds worked in high relief and colour inlay, with katakiri-bori where the design calls for it, and the records read the Otsuki-school quality plainly in his work. The records single out two things as personal to him: that he produced many tsuba (rather than the small okite-mono of the Goto house), and that he excelled at figure-pictures, beginning with warrior-pictures (musha-e), and worked widely in birds, animals and the lion. His celebrated piece is a Koromogawa-yakata tsuba depicting a scene of the Former and Later Nine Years battles, called one of his representative works. One whole koshirae here is unified by Otsu-e folk-painting subjects, each charm-bearing. With only four pieces, all Important (Juyo), this is a very thin corpus, and the genuine separators from the broader machibori field are scope-tight and low-n. This profile reads his identity, biography and signature chronology from the catalog records only. (Note: the art-name Gassan is also famous as a swordsmith line; this Gassan is a soft-metal fittings maker of the Kyoto Otsuki school, unrelated to that smith lineage.)
Where Matsuo Gassan stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Machibori · Yamashiro
23 pieces on the market now
The Otsuki school is a distinguished lineage of Kyoto kinko (metalworkers) whose production spans from the mid-Edo period through the Bakumatsu era, consistently identified by the NBTHK as one of the most eminent metalworking lineages of the capital. " The school also acknowledged its debt to earlier Kyoto masters, with the NBTHK detecting in Mitsuoki's modeling the influence of Umetada Myoju and in his pictorial conception the influence of Kaneie. The collective technical vocabulary of the Otsuki school centers on takabori iroe (high-relief carving with polychrome metalwork), deployed with a fundamentally pictorial intelligence that distinguishes it from most other metalworking lineages. Across multiple generations, Otsuki artists worked in katakiribori (single-chisel engraving), hira-zogan (flat inlay), sukidashi-bori (relief modeling from the plate), and fine kebori (hairline engraving), often combining several techniques within a single composition. A defining characteristic is the school's command of varied ground materials -- iron, shakudo, shibuichi, oborogin, brass, and even solid gold -- finished as migaki-ji (polished), nanako-ji (fish-roe stipple), arashi-ji, or ishime-ji, each selected to serve the pictorial demands of the subject. " In subsequent generations, Atsuoki demonstrated daring compositional arrangements while maintaining an unmistakably Kyoto refinement, and Hidekuni achieved effects of "keen sharpness and driving momentum" through masterful deployment of irogane alloys.
Across the school's output, compositions characteristically make effective use of generous open space to achieve atmospheric depth, narrative pull, and a lyric quality that the NBTHK repeatedly identifies as distinctively Otsuki. The Otsuki school's legacy rests on its fusion of painter's sensibility with metalworker's discipline, producing works of a character at once bold and subtly graceful. " Atsuoki's commissions for both the Tokugawa shogunate and the imperial household -- including fittings for the wearing sword of the fourteenth shogun Tokugawa Iemochi and for Emperor Komei -- attest to the esteem in which the school was held at the highest levels of patronage. Hidekuni's later works exhibit "an airy and unconventional spirit" emblematic of Mitsuoki's own late manner, confirming that the school's aesthetic evolution was one of deepening refinement rather than mere technical inheritance. The NBTHK consistently positions the Otsuki school among Kyoto's most eminent metalworking traditions, and its members' works -- from Motohiro's ambitious narrative programs treating the Fifty-three Stations of the Tokaido to Kaizan Oki's compositions of "elevated tone and dignity" -- constitute an essential chapter in the history of late Edo-period chokinshi artistry. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Tokuoki篤興 | 1813-1891 | 20 |
| Mitsuoki光興 | 1766-1834 | 12 |
| Hidekuni秀国 | 1670 | 8 |
| Oki/Masaoki/Minayama Oki応起 | 1670 | 7 |
| Harutsura春貫 | — | 6 |
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 is a tsuba (sword guard) featuring scattered auspicious motifs. It is signed by Kongosai Gassan, indicating the maker. The piece is likely from the Edo period, showcasing the craftsmanship of the Gassan school.
NihontoWatchMachibori · Yamashiro · around 1815-1875
1 piece on the market now
Matsuo Gassan was a late-Edo Kyoto metalwork artist of the Otsuki school. The records give his identity in full: his real name was Matsuo Karoku, he was born in Kyoto in Bunka 12 (1815) and died in Meiji 8 (1875) aged sixty-one, and he signed under the studio-go Kongosai and Tososhitei. They make him a pupil of Kawarabayashi Hideoki of the Otsuki school (the same teacher as Sasayama Tokuoki), and one record names him a fine hand who honed his skill alongside his fellow Hideoki pupils Tokuoki and Tenkodo Hidekuni. His ground and hand are the Otsuki house manner: shakudo, brass, iron and shibuichi grounds worked in high relief and colour inlay, with katakiri-bori where the design calls for it, and the records read the Otsuki-school quality plainly in his work. The records single out two things as personal to him: that he produced many tsuba (rather than the small okite-mono of the Goto house), and that he excelled at figure-pictures, beginning with warrior-pictures (musha-e), and worked widely in birds, animals and the lion. His celebrated piece is a Koromogawa-yakata tsuba depicting a scene of the Former and Later Nine Years battles, called one of his representative works. One whole koshirae here is unified by Otsu-e folk-painting subjects, each charm-bearing. With only four pieces, all Important (Juyo), this is a very thin corpus, and the genuine separators from the broader machibori field are scope-tight and low-n. This profile reads his identity, biography and signature chronology from the catalog records only. (Note: the art-name Gassan is also famous as a swordsmith line; this Gassan is a soft-metal fittings maker of the Kyoto Otsuki school, unrelated to that smith lineage.)
Where Matsuo Gassan stands among comparable artisans: across all of nihontō, and within tradition, era, and period. The tiers (Foremost · Leading · Major · Notable) weigh official designations from the NBTHK and Japan's Agency for Cultural Affairs, together with historical honors of lasting repute such as the Sansaku and Meibutsu-chō.
Select a lens to see how it's measured.
Machibori · Yamashiro
23 pieces on the market now
The Otsuki school is a distinguished lineage of Kyoto kinko (metalworkers) whose production spans from the mid-Edo period through the Bakumatsu era, consistently identified by the NBTHK as one of the most eminent metalworking lineages of the capital. " The school also acknowledged its debt to earlier Kyoto masters, with the NBTHK detecting in Mitsuoki's modeling the influence of Umetada Myoju and in his pictorial conception the influence of Kaneie. The collective technical vocabulary of the Otsuki school centers on takabori iroe (high-relief carving with polychrome metalwork), deployed with a fundamentally pictorial intelligence that distinguishes it from most other metalworking lineages. Across multiple generations, Otsuki artists worked in katakiribori (single-chisel engraving), hira-zogan (flat inlay), sukidashi-bori (relief modeling from the plate), and fine kebori (hairline engraving), often combining several techniques within a single composition. A defining characteristic is the school's command of varied ground materials -- iron, shakudo, shibuichi, oborogin, brass, and even solid gold -- finished as migaki-ji (polished), nanako-ji (fish-roe stipple), arashi-ji, or ishime-ji, each selected to serve the pictorial demands of the subject. " In subsequent generations, Atsuoki demonstrated daring compositional arrangements while maintaining an unmistakably Kyoto refinement, and Hidekuni achieved effects of "keen sharpness and driving momentum" through masterful deployment of irogane alloys.
Across the school's output, compositions characteristically make effective use of generous open space to achieve atmospheric depth, narrative pull, and a lyric quality that the NBTHK repeatedly identifies as distinctively Otsuki. The Otsuki school's legacy rests on its fusion of painter's sensibility with metalworker's discipline, producing works of a character at once bold and subtly graceful. " Atsuoki's commissions for both the Tokugawa shogunate and the imperial household -- including fittings for the wearing sword of the fourteenth shogun Tokugawa Iemochi and for Emperor Komei -- attest to the esteem in which the school was held at the highest levels of patronage. Hidekuni's later works exhibit "an airy and unconventional spirit" emblematic of Mitsuoki's own late manner, confirming that the school's aesthetic evolution was one of deepening refinement rather than mere technical inheritance. The NBTHK consistently positions the Otsuki school among Kyoto's most eminent metalworking traditions, and its members' works -- from Motohiro's ambitious narrative programs treating the Fifty-three Stations of the Tokaido to Kaizan Oki's compositions of "elevated tone and dignity" -- constitute an essential chapter in the history of late Edo-period chokinshi artistry. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Tokuoki篤興 | 1813-1891 | 20 |
| Mitsuoki光興 | 1766-1834 | 12 |
| Hidekuni秀国 | 1670 | 8 |
| Oki/Masaoki/Minayama Oki応起 | 1670 | 7 |
| Harutsura春貫 | — | 6 |
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.
