Franz Ertinger after Joseph Werner, ‘Self-Portrait of Joseph Werner’, ca. 1662, National Gallery of Art, Washington, D.C.
plate: 20.8 x 13.2 cm (8 3/16 x 5 3/16 in.)  sheet: 22.5 x 15.6 cm (8 7/8 x 6 1/8 in.)