A three-quarter-length portrait of Adam Duncan (1731–1804) in admiral’s undress uniform, 1795–1812, holding his sword and his hat in his left hand and resting his right hand on a cannon. He stands on the deck of his flagship, the ‘Venerable’, 74 guns, at the Battle of Camperdown on 11 October 1797 with a Dutch ship ‘Hercules’ burning in the background. Lettered beneath the image with the title, ‘The Right Honble. Lord Viscount Duncan &c.&c.&c. Admiral of the Blue and Commander in Chief of His Majesty’s Ships in the North Sea at the Defeat of the Dutch Fleet on the 11th of October 1797.’ Also lettered with the production details and publication line: ‘Painted by J. S. Copley R.A. / Engraved by R. Earlom. / Published & Sold March 1 1798 by J. S. Copley, George Street, Hanover Square.’ This portrait was engraved by Richard Earlom after John Singleton Copley’s three-quarter-length oil painting of 1798, now in National Galleries Scotland. The print was published by Copley himself on 1 March 1798, shortly before the original painted portrait went on public display at the Royal Academy summer exhibition. Copley’s portrait was a preparatory study for his history painting of ‘The Surrender of the Dutch Admiral de Winter to Admiral Duncan at the Battle of Camperdown’, which was completed in 1799 and exhibited by the artist in a purpose-built pavilion in Lord Suffield’s garden on Albemarle Street between May and August 1799. (Updated June 2019.)