Michel Sittow, ‘Portrait of Diego de Guevara (?)’, ca. 1515/1518, National Gallery of Art, Washington, D.C.
overall: 33.6 x 23.7 cm (13 1/4 x 9 5/16 in.)  framed: 54.9 x 46.3 cm (21 5/8 x 18 1/4 in.)