Drachm

Istros, a Milesian colony on the western Black Sea coast near the Danube delta, produced this drachm type during the 4th–3rd centuries BC when the city controlled significant grain and fish trade routes feeding the Greek world. The peculiar double-facing obverse heads on this type — inverted relative to one another — have generated debate for over a century, with theories ranging from the Dioscuri to the twin mouths of the Istros river itself. No consensus has landed.

AMNG I-I#425 places this within Pick's foundational 1898 corpus, still the primary reference for Thracian and Moesian civic coinage.