Amisus, Mithradates as Dionysos, AE 21home US $21.50 Feb-23-05 Amisus, Mithradates as Dionysos, AE 21 AE 21, Pontus, Amisus, c. 85-65 BC, 8.33g. SNG BM-1209. Obv: Head of Mithradates VI the Great as Dionysos r. wearing ivy wreath. Rx: Cista mystica, on which panther skin and thyrsus, monograms to either side.