40000251, Poniatowski, T220, MERCURY WEIGHING THE SOULS OF THE DEAD [ON THE BANKS OF LETHE], GNAIOS, Gnaios, 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), 220, Cornelian

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