Watch List notes:

THRACE (MOESIA INFERIOR), Istros, (400-350 B.C.), silver stater, (6.16 g), obv. two young male heads facing, side by side, right inverted, left upright, rev. sea-eagle standing to left on dolphin to left, which it attacks with its beak, below dolphin monogram **DI*, (cf.S.1669, SNG BMC 253, BMC 3, SNG Stancomb 147, Pick 421, Dima: Table II, sub-group IV, No.9 dates c313-c280 B.C.). Lightly toned, good extremely fine with traces of mint bloom on reverse.

Ex Del Parker 25 March 2001, previously from Dimitry Markov (New York), with a detailed ticket.
A similar example in sale 124 (lot 2982) realised $850.