40000848, Poniatowski, T814, APOLLO ROUSING HECTOR TO RETURN TO THE BATTLE [APOLLO ENCOURAGING A WOUNDED WARRIOR], DIOSKOURIDOU, Dioskourides, Paris, Cabinet des médailles, Bibliothèque nationale de France, Seguin, (Jean-Charles), Christie's, London, Monson, (Lord), 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, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), H2925, inv.422, Amethyst