Ferdinando II, Grand Duke of Tuscany. Dated: before 1691. Dimensions: plate: 33.5 x 24.2 cm (13 3/16 x 9 1/2 in.) sheet: 37 x 26.7 cm (14 9/16 x 10 1/2 in.). Medium: engraving on laid paper. Museum: National Gallery of Art, Washington DC. Author: Adr