Portrait of George, Prince of Wales (1738-1820), later George III, Jean-Étienne Liotard, 1754

The pigment liotard used for the prince's coat, which was bright red, has faded due to light exposure for over 260 years. The other colors used remain vibrant. Date: 1754. Dimensions: height: 40.6 cm (15.9 in); width: 29.8 cm (11.7 in). Medium: pastel on vellum. Collection: Royal Collection. George, Prince of Wales, later George III, 1754 by Liotard