The bases, if not original, are certainly close to it. The one with Louis XVI's portrait and the legend "cherished by all" predates the monarch's death in 1793. Marin exhibited comparable groups at the Salons of 1793 and 1795.
Signature: On base at back below the rock: Marin
Inscription: In tabula on pedestal: CHERI DE TOUS (trans: "Cherished by all")
Marquis de Bailleul (to his daughter) ; his daughter, Comtesse de la Potterie ; [ sale, Sotheby's, London July 3, 1959, no. 65; to Rosenberg ] ; Rosenberg (from 1959) ; Mr. and Mrs. Charles Wrightsman , New York (until 1983; to MMA)