40000631, Poniatowski, T603, AEGEUS PREVENTING THESEUS [WHOM HE RECOGNIZED BY THE SWORD LYING ON THE TABLE] FROM QUAFFING THE POISONED CUP [OF MEDEA], GNAIOS, Gnaios, Ashmolean Museum, Oxford, 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), "Found unnumbered in the collection"; ANOL.45 on M+, Sardonyx