40000479, Poniatowski, T450, HERCULES AND OMPHALE [HAVING EXCHANGED THE CLUB FOR THE DISTAFF, IS FASTENING THE SKIN OF THE LION OVER HER SHOULDERS BY THE CLAWS], SOLWNOS, Solon, Antichità Alberto Di Castro, Rome, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), Prendeville, J.: Explanatory catalogue of the proof-impressions of the antique gems possessed by the late Prince Poniatowski and now in the possession of John Tyrrell, Esq. (1841), Christie's, London, II.351, Cornelian