40000583, Poniatowski, T554, OEDIPUS [STANDING BY THE SIDE OF THE HORSE] EXPLAINING THE ENIGMA OF THE SPHYNX [WHO IS SEATED ON A ROCK], GNAIOS, Gnaios, Unknown, 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), June 9, 1851, lot 54, Sardonyx

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