40002378, Poniatowski, 1839-1934, HEAD OF AN EAGLE, MIQ., Mithridates, Unknown, King, C.W.: Antique gems: their origin, uses, and value as interpreters of ancient history; and as illustrative of ancient art: with hints to gem collectors (1860), Daktyliothek Poniatowski 1832, Antikensammlung Berlin, Christie's, London, Catalogue des pierres gravées antiques de S.A. le Prince Stanislas Poniatowski ([1830?]-1833), P. 223, Cornelian