40002022, Poniatowski, 1839-1302, HEAD OF DIOMEDE IN A HELMET, WITH THE PALLADIUM, TEUKROS, Teuker, Unknown, Mr. Phillips, Auction Offices, 73 New Bond Street, London, Northwick, Worcestershire, Daktyliothek Poniatowski 1832, Antikensammlung Berlin, Christie's, London, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), 4 August 1859, lot 1355, Amethyst

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