Peter Paul Rubens (1577-1640)-attributedPeter Paul Rubens (1577-1640)-attributed, Oil study of a boy with curled hair and a necklace; painting section possible oil study for the monumental Painting The four continents or rivers Danube,Ganges,Nile,Rio d la Plata of in the Kunsthistorische Museum Vienna; ooil on canvas.47x35cm