Perry’s arrival in 1853 unraveled the Tokugawa peace and created the first mass demand for working swords in two centuries. Kiyomaro, called the Masamune of Yotsuya, died on its eve; Munetsugu and Yukihide carried the boom to the end.
NihontoWatchNihontoWatchGassan Unryushi Sadakazu was born in February of Tenpo 7 in Sugoshi, Inukami District, Omi Province. At the age of seven, he became the adopted son of the Osaka swordsmith Sadayoshi, who followed the lineage of Ko-Gassan, and at the age of eleven, he entered full-scale apprenticeship in smithing. In addition to a naturally high spirit of inquiry, his tireless effort and research bore fruit, allowing him to master a wide range of styles including Bizen-den, Soshu-den, and Yamato-den, excelling in all of them, and furthermore demonstrating superior skill and sensibility in toshin bori. Sadakazu, who used the go Unryushi, was a genius who radiated a particularly strong brilliance in Osaka during the Bakumatsu period.
NihontoWatchOffered by Choshuya
Gassan Sadakazu is a name with Jūyō-designated work, and we couldn’t find current papers for this piece. Treat the name as unproven until papers say otherwise. — Hoshi Ask me first
7 on the market
As written by the shop
Machine translation from the shop's Japanese · may contain errors ·
Shinshinto · Settsu · around 1864-1865
Fujishiro Jo saku · Tōken Taikan top 23%
7 pieces on the market now
Where Sadakazu 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.
Shinshinto · Settsu
27 pieces on the market now
| Smith | Era | Designated |
|---|---|---|
| Sadaharu貞晴 | 1865-1868 | 0 |
| Sadayoshi貞吉 | 1926-1989 | 0 |
| Yoshiaki吉明 | 1844-1848 | 0 |
| Naonobu直信 | 1854-1860 | 0 |
| Sadayoshi貞吉 | 1830-1863 | 0 |
Bakumatsu: the last war market
Perry’s arrival in 1853 unraveled the Tokugawa peace and created the first mass demand for working swords in two centuries. Kiyomaro, called the Masamune of Yotsuya, died on its eve; Munetsugu and Yukihide carried the boom to the end.
We could not find an authenticity certificate on the seller’s listing. Japanese swords and fittings are normally papered by the NBTHK (or the NTHK). Without one, the attribution is the seller’s own assessment and has not been independently verified — treat it with caution and ask the dealer about certification before buying.
If, 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.
¥2,500,000