40001784, Poniatowski, 1839-823, AGAMEMNON, HAVING SEIZED THE SPEAR WHICH IPHIDAMAS HAD AIMED AT HIS BREAST, IS ABOUT TO STRIKE WITH HIS SWORD THE FATAL BLOW ON THE SON OF ANTENOR, WHO IS ENDEAVOURING TO PROTECT HIMSELF WITH HIS SHIELD, APOLLONIDOU, Apollonides, Private Collection, Christie's, London, A. Pash and Sons of Mayfair, London, Market, Sotheby's, New York, London, Cameo Corner (E. Good - later Moshe Oved), Breadalbane, (Marquess), Christie's, London, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), 15 July 1886, Sardonyx