License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Jean André Prosper Henri Le Page. Cased Pair of Percussion Target Pistols with Loading and Cleaning Accessories, Made for Henri Charles Ferdinand Marie Dieudonné d'Artois, Duke of Bordeaux, Count of Chambord (1820–1883), dated 1829. The Metropolitan Museum of Art.