Herakles - MYSIA Hemidrachm. GORGON. BULL Mysia - Parium. c. 350 - 300 B.C. AR Hemidrachm. 2.40 grams. Obverse: Gorgoneion. Reverse: Bull standing l., looking back; above, monogram; beneath, P I and star. BMC 14. Good Very Fine. Herakles Numismatics, Inc.