A bust-length portrait of Adam Duncan (1731–1804) in admiral’s undress uniform, 1795–1812, with the star of the Russian Imperial Order of St Alexander Nevsky. Lettered beneath the image with the sitter’s coat of arms and the title, ‘The Right Honourable Admiral Lod Viscount Duncan.’ Also lettered with the engraver’s signature, ‘Maurin’, and the printer’s details, ‘Lith. de Villain, rue de Sevres, No. 23.’ This nineteenth-century portrait lithograph was drawn by Nicolas Eustache Maurin after a three-quarter-length oil painting, attributed to the studio of John Singleton Copley, now in National Galleries Scotland. The lithograph was printed by de Villain. (Updated June 2019.)