Kings of Macedon, AR tetradrachm, Alexander III ("the Great"), 336-323 BC, Kallitis mint, 250-225 BC, mounted in 14K gold pendant-bezel. Price 926; Mueller 494. 25.57 grams. Head of Heracles right, wearing lion skin headdress / Zeus seated left, holding eagle and scepter; PA monogram in left field, grain ear in exergue. Substantial mounting with little-to-no wear; beautifully toned coin with much detail; XF. (Estimate: $600 - 900)