Mysia, Pergamon. (Gongylos/Eurysthenes, as satrap). AR Diobol, Circa 450-350 BC.

The identification of the portrait on the reverse of this issue has been the subject of debate. There, Xerxes granted him the territory of Pergamon in Asia Minor from circa 470-460 BC as a reward. His two sons, Gorgion and Gongylos the younger, ruled respectively over the cities of Gambrium and Palaegambrium for Gorgion, and Myrina and Grynium for Gongylos.

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