‘Portrait of a Nobleman’, ca. 1570, National Gallery of Art, Washington, D.C.
original panel: 31.2 x 22.7 cm (12 5/16 x 8 15/16 in.)  overall (with wooden shims): 32.4 x 23.6 cm (12 3/4 x 9 5/16 in.)  framed: 47.9 x 38.1 x 7.3 cm (18 7/8 x 15 x 2 7/8 in.)