40000165, Poniatowski, T137, MINERVA HAVING SHEWN PALLAS THE HEAD OF MEDUSA, HE WAS IMMEDIATELY TURNED TO STONE. DEMASTOR, THE COMPANION OF PALLAS, AND FIERCE AS HE, RAISED HIM FROM THE EARTH, AND HURLED HIM AT THE GODS, KROMOU, Kromos, Unknown, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), The Wellington Gems (1977) [London, Market, S.J. Phillips], 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, I.208, Amethyst

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