Willem Basse, ‘Heemskerck's Victory Over the Spanish Fleet at Gibraltar’, 1634, National Gallery of Art, Washington, D.C.
plate (partially trimmed to plate mark): 12.4 x 15.6 cm (4 7/8 x 6 1/8 in.)  sheet: 12.5 x 17.1 cm (4 15/16 x 6 3/4 in.)