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): 618
Monson, (Lord)
Christie's, London: June 9, 1851, lot 175
Market: Taffin Jewellery
Comments: taffinjewelryPrince Poniatowski intaglio on amethyst. Set as a brooch in a blue ceramic and rose gold frame.