Sengoku Seki was an industry: smiths organized under their tutelary Kasuga shrine, arming the war bands of central Japan. Magoroku Kanemoto’s sanbonsugi and the finest Kanesada work prove quality survived inside mass production.
This is an ubu katana from the Koto period, signed by Ietsugu. It comes with a NBTHK Hozon certificate for the blade and two Tokubetsu Kicho certificates for both the blade and its koshirae. The sword originates from Kashu province and dates to the mid to late Muromachi period, around 1550 AD.
NihontoWatchmei · Kyoroku (1528-1532) · nagasa 69.1cm
Mino-den · Kaga · around 1528-1558
Fujishiro Chu-jo saku · Tōken Taikan top 60%
6 pieces on the market now
Where Ietsugu 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.
Mino-den · Kaga
27 pieces on the market now
The Kaga inlay tradition (Kaga zōgan) emerged in Kaga Province during the early Edo period, centered on the castle town of Kanazawa under the patronage of the Maeda clan. This distinctive form of hira-zōgan is said to have developed when craftsmen specializing in stirrup decoration (abumi-shi) adapted their metalworking techniques to tsuba and other sword fittings, flourishing from the early seventeenth century through the Kyōhō era (1716–1736). Working against polished grounds of shakudō, shibuichi, or occasionally refined copper (suaka), these artisans created works characterized by their compositional sophistication and technical precision, establishing a regional aesthetic that would influence later generations of metalworkers. The hallmark of Kaga workmanship lies in its masterful deployment of multiple colored metals—gold, silver, copper, shakudō, and shibuichi—inlaid in flat relief against dark, highly polished grounds. Motifs range from naturalistic subjects such as autumn grasses, butterflies, and mandarin ducks beneath willows to more formal designs including paulownia crests and brocade wrappers, all rendered with meticulous kebori line engraving that adds refinement to the broader inlay work.
The compositions typically extend across the entire surface of the guard, creating an effect of visual richness and decorative abundance. Against jet-black shakudō or the warm tonality of suaka, the multicolored inlays achieve a luminous clarity, producing works of elegant splendor (fūryū) that balance technical virtuosity with restrained taste. The tradition's influence extended beyond its geographic center, with works attributed to Kaga methods appearing in collections throughout Japan. Large-scale presentation pieces demonstrate the school's capacity for ambitious design, while the consistent quality of execution across surviving examples suggests a well-established workshop system with shared technical standards. Though individual makers within the tradition rarely signed their work, the distinctive aesthetic—characterized by full-surface compositions, polished dark grounds, and precise multicolor inlay—remains immediately recognizable, preserving the legacy of Kanazawa's metalworking excellence through the Edo period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Sanekage真景 | 1362-1368 | 47 |
| Takahira高平 | 1621-1644 | 9 |
| Kagemitsu景光 | 1362-1368 | 3 |
| Ietsugu家次 | 1528-1558 | 1 |
| Kagehira景平 | 1661-1673 | 1 |
Mino in the Muromachi period
Sengoku Seki was an industry: smiths organized under their tutelary Kasuga shrine, arming the war bands of central Japan. Magoroku Kanemoto’s sanbonsugi and the finest Kanesada work prove quality survived inside mass production.
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 the item fails to meet the description, it may be eligible for a return (at the seller's discretion). Item(s) must be shipped back only via FedEx or UPS within 48 hours of receipt, in original undamaged state. Costs are the purchaser's responsibility.
This is an ubu katana from the Koto period, signed by Ietsugu. It comes with a NBTHK Hozon certificate for the blade and two Tokubetsu Kicho certificates for both the blade and its koshirae. The sword originates from Kashu province and dates to the mid to late Muromachi period, around 1550 AD.
NihontoWatchmei · Kyoroku (1528-1532) · nagasa 69.1cm
Mino-den · Kaga · around 1528-1558
Fujishiro Chu-jo saku · Tōken Taikan top 60%
6 pieces on the market now
Where Ietsugu 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.
Mino-den · Kaga
27 pieces on the market now
The Kaga inlay tradition (Kaga zōgan) emerged in Kaga Province during the early Edo period, centered on the castle town of Kanazawa under the patronage of the Maeda clan. This distinctive form of hira-zōgan is said to have developed when craftsmen specializing in stirrup decoration (abumi-shi) adapted their metalworking techniques to tsuba and other sword fittings, flourishing from the early seventeenth century through the Kyōhō era (1716–1736). Working against polished grounds of shakudō, shibuichi, or occasionally refined copper (suaka), these artisans created works characterized by their compositional sophistication and technical precision, establishing a regional aesthetic that would influence later generations of metalworkers. The hallmark of Kaga workmanship lies in its masterful deployment of multiple colored metals—gold, silver, copper, shakudō, and shibuichi—inlaid in flat relief against dark, highly polished grounds. Motifs range from naturalistic subjects such as autumn grasses, butterflies, and mandarin ducks beneath willows to more formal designs including paulownia crests and brocade wrappers, all rendered with meticulous kebori line engraving that adds refinement to the broader inlay work.
The compositions typically extend across the entire surface of the guard, creating an effect of visual richness and decorative abundance. Against jet-black shakudō or the warm tonality of suaka, the multicolored inlays achieve a luminous clarity, producing works of elegant splendor (fūryū) that balance technical virtuosity with restrained taste. The tradition's influence extended beyond its geographic center, with works attributed to Kaga methods appearing in collections throughout Japan. Large-scale presentation pieces demonstrate the school's capacity for ambitious design, while the consistent quality of execution across surviving examples suggests a well-established workshop system with shared technical standards. Though individual makers within the tradition rarely signed their work, the distinctive aesthetic—characterized by full-surface compositions, polished dark grounds, and precise multicolor inlay—remains immediately recognizable, preserving the legacy of Kanazawa's metalworking excellence through the Edo period. Learn more →
| Smith | Era | Designated |
|---|---|---|
| Sanekage真景 | 1362-1368 | 47 |
| Takahira高平 | 1621-1644 | 9 |
| Kagemitsu景光 | 1362-1368 | 3 |
| Ietsugu家次 | 1528-1558 | 1 |
| Kagehira景平 | 1661-1673 | 1 |
Mino in the Muromachi period
Sengoku Seki was an industry: smiths organized under their tutelary Kasuga shrine, arming the war bands of central Japan. Magoroku Kanemoto’s sanbonsugi and the finest Kanesada work prove quality survived inside mass production.
Certifies a genuine blade worth preserving: a signature confirmed correct, or, if unsigned, an era, province, and school that the NBTHK can reliably identify.
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 the item fails to meet the description, it may be eligible for a return (at the seller's discretion). Item(s) must be shipped back only via FedEx or UPS within 48 hours of receipt, in original undamaged state. Costs are the purchaser's responsibility.
