Iridescent tone.
Ex. Mentor collection.
Greece
Seleucids, Demetrius II Nicator (145-139 BC and 129-125 BC), Tetradrachm 145 BC, Tyre mint
Obverse: Demetrius II head right
Reverse: eagle standing left on prow, palm over shoulder, club in left field, date ZΞP above monogram in right field
Diameter 28 mm, weight 13.06 g