Self-portrait of the german painter anton raphael mengs (1728-1779). Object Type: painting. Genre: self-portrait. Date: between circa 1761 and circa 1769. Dimensions: height: 63 cm (24.8 in); width: 50 cm (19.6 in). Medium: oil on panel. Depicted People: Anton Raphael Mengs. Collection: Museo del Prado. Autorretrato de Anton Raphael Mengs (Museo del Prado)