Diobol

Ainos, a Thracian coastal city at the mouth of the Hebros river, maintained its own silver coinage well into the fourth century despite sitting in territory repeatedly contested between Athenian, Persian, and later Macedonian interests. The diobol series catalogued by May falls within the decade following Athens' catastrophic defeat in Sicily and the subsequent collapse of her naval empire — a period when smaller Aegean and Thracian mints reasserted commercial independence they had long suppressed.

The May 334–336 sequence represents a tight chronological cluster distinguished by subtle die differences rather than type changes.