40001918, Poniatowski, 1839-1042, MERCURY, BUST, WITH CADUCEUS AND WINGED CAP, GNAIOS, Gnaios, Unknown, Cades, T.: Impronte dell' Instituto, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), Christie's, London, 73.901, Cornelian