EditorialPortrait of Hortense de Perregaux, Duchess of Ragusa, 1818. Jean-Baptiste Isabey (French, 1767-1855). Watercolor on card on a gilt metal mount in a pale wood frame; framed: 21.5 x 15.5 cm (8 7/16 x 6 1/8 in.); unframed: 12.9 x 9 cm (5 1/16 x 3 9/16 in.).