A Man Holding a Horse by His Bridle. Dated: 1651. Dimensions: plate: 15.1 ? 19.2 cm (5 15/16 ? 7 9/16 in.) sheet: 16 ? 20.1 cm (6 5/16 ? 7 15/16 in.). Medium: etching on laid paper. Museum: National Gallery of Art, Washington DC. Author: DIRCK STOOP.