Istros (Thrace), Stater (silver coin replica) 400 - 320 BC.
OBV: Two young male heads facing, side by side, one upright, the other inverted.
R: ΙΣΤΡΙΗ Sea-eagle standing left on dolphin. Δ below dolphin.

The curious obverse type has been variously interpreted as representing the Dioskouroi, the rising and setting sun etc...