Yvon served as the principal battle-painter of france's second empire (1852-70), executing a number of monumental canvases for the palace at versailles. The french emperor is shown in his prime, two years before the defeat of his forces in the franco-prussian war (1870-1871). Object Type: painting. Genre: portrait. Date: 1868. Dimensions: height: 55.7 cm (21.9 in) ; width: 46.7 cm (18.3 in). Medium: oil on canvas. Depicted People: Napoleon III. Collection: Walters Art Museum. Portrait of Napoleon III