Portrait of William Henry Nassau de Zuylestein, 4th Earl of Rochford, Christian Friedrich Zincke, between 1740 and 1745

Date: between 1740 and 1745. Dimensions: 45 × 35 mm (1.77 × 1.37 in). Medium: enamel. Collection: National Portrait Gallery. Ch F Zincke - William Henry Nassau de Zuylestein, enamel on cooper ca1740-45 NPG 5796