Herakles - Parium, Mysia. GORGON. BULL. Mysia - Parium. Circa 350 - 300 B.C. AR Hemidrachm. 2.40 grams. Obv. Gorgoneion. Rv. Bull standing l., looking back; above, monogram; beneath, P I and cockle-shell. BMC 14. Very Fine. Herakles Numismatics, Inc.