Attractive example.
Greece
Seleucids, Philip I Philadelphos (145-139 BC and 129-125 BC), Tetradrachm 88-87 BC, Antioch mint
Obverse: diademed head right
Reverse: Zeus seated left, holding Nike and sceptre, Φ above A in left field
BAΣIΛEΩΣ ΦIΛIΠΠOY EΠIΦANOYΣ ΦIΛAΔEΛΦOY
Diameter 28 mm, weight 15.53 g