Theodor van Kessel after Sir Peter Paul Rubens, ‘Siren and Triton’, National Gallery of Art, Washington, D.C.
plate: 20.6 x 31.8 cm (8 1/8 x 12 1/2 in.)  sheet: 22.4 x 33.4 cm (8 13/16 x 13 1/8 in.)