Stater

Kyzikos, a Milesian colony on the Propontis, became one of the ancient world's most prolific producers of electrum coinage, and its staters circulated far beyond the Black Sea trade zone into which the city was commercially embedded. The Kyzikene stater functioned effectively as an international reserve currency across the Greek world for roughly two centuries — a remarkable run for any ancient monetary type.

The billon composition here, rather than the higher-electrum alloy of later Kyzikene issues, places this among the earlier production, when natural pale gold from regional river sources had not yet been standardized against a controlled gold-silver ratio.