Tetrobol

Ainos, a Thracian coastal city at the mouth of the Hebros river, maintained remarkable monetary independence through the late fifth and early fourth centuries despite sitting directly in the contested zone between Athenian commercial influence and Odrysian Thracian territorial pressure. This tetrobol falls within the brief window after Athens' catastrophic Sicilian defeat had loosened its grip on Aegean trade networks, allowing smaller mints like Ainos to assert local coinage more aggressively. May's die study remains the authoritative reference for this series, with #345 placing the piece within a tightly documented sequence.