Baldassare d'Este, ‘Francesco II Gonzaga, Fourth Marquis of Mantua’, ca. 1474/1480, National Gallery of Art, Washington, D.C.
overall: 26.5 x 21 cm (10 7/16 x 8 1/4 in.)  framed: 49.5 x 44.5 cm (19 1/2 x 17 1/2 in.)