TYPE Ancient Greece, Istros (Thrace), 4th c. BC, silver stater, 5.52g DESCRIPTION . Obv: Two male heads facing, left one inverted Rev: Sea eagle on dolphin, Greek legend ISTRIE, symbol below REFERENCE: SG 1669v GRADING: F+ ORDER INFO: G2793, $170 The unique and interesting obverse design has several possible interpretations, including the Dioskouri, the rising and setting sun and the final two branches of the Danube (ancient Ister). While hardly reflecting zoological reality - as an 18-pound eagle is unlikely to attack a much heavier dolphin at sea - the reverse scene, present on coinages of two Black Sea cities (Istros and Sinope - though rather distant, they were both originally Milesian colonies) might have some symbolic significance in juxtaposing two leading deities - Zeus and Poseidon - through their sacred animals.