Pontos, Amisos, AE 22 (bronze, 6,19 g, 21 mm) time of Mithradates VI (120-63 BC)

Pontos, Amisos, AE 22 (bronze, 6,19 g, 21 mm) time of Mithradates VI (120-63 BC)
Obv: Aegis with facing Gorgon in the centre
Rev: AMI-ΣOY, Nike walking right, holding palm over shoulder with both hands, monograme in left and right (?) field.
Ref: SNG Cop 170 var. (monogram)