40000280, Poniatowski, T249, GALATEA, DAUGHTER OF NEREUS AND DORIS, [BORNE] BY A TRITON, WHO, PLAYING ON A SEA-SHELL, CALMS THE ANGRY WAVES, DIOSKOURIDOU, Dioskourides, Unknown, Christie's, London, Scarisbrick, (Charles), Esq., 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, May 16, 1861, lot 174, Amethyst

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