Jean-Claude Chambellan Duplessis

He served as artistic director of the Vincennes porcelain manufactory and its successor at Sèvres from 1748 to his death in 1774 and as royal goldsmith (orfèvre du Roi) from 1758 to 1774.

When Carignan returned to Turin, Duplessis placed himself under the protection of Marc-René de Voyer de Paulmy d'Argenson (1722–1787), who obtained for him workshop lodgings in the galeries du Louvre as a privileged worker not bound by the rules of the Paris guilds, which would not have accepted a foreign-born craftsman.

[3] Duplessis' designs in gilt-bronze are undocumented, aside from the pair of braziers made for presentation in 1742 to the ambassador from the Sublime Porte, Mehmed Said Efendi, of which one is conserved at Topkapi Palace Museum, Istanbul,[4] and a set of mounts he contributed during the 1760s to the Bureau du Roi at Versailles.

In Paris he created the wax models for gilt-bronze mounts for furniture and especially for porcelains, in which capacity he appears repeatedly in the day-book of the marchand-mercier Lazare Duvaux.

Extrapolating from Duplessis' vases for Vincennes and Sėvres, Ted Dell recognized Duplessis' hand in the bold Louis XV gilt-bronze mounts of a pair of dark blue Chinese porcelain vases in the Frick Collection (25.8.43-44) and tentatively suggested a core group of closely comparable gilt-bronze mounts for porcelains, ca 1755-60, that appear to be designed by the same hand.