Veue d'une Antiquit? de Constantin proche de Rome. Dated: 1640-1660. Dimensions: plate: 12 ? 25.2 cm (4 3/4 ? 9 15/16 in.) sheet: 21.1 ? 33 cm (8 5/16 ? 13 in.). Medium: etching on laid paper. Museum: National Gallery of Art, Washington DC. Author: I