Æ19 - Valerian and Gallienus COL AVG TROA

Alexandria Troas held the status of a Roman colony — Colonia Augusta Troadensis — a designation granted under Augustus and jealously maintained through the imperial period. That colonial identity drove the city's mint to produce autonomous bronze coinage long after most Asian Greek cities had abandoned the practice, continuing well into the joint reign of Valerian and Gallienus even as the empire fractured under military pressure and plague.

The mint ceased operations entirely after 268 AD, almost certainly connected to the broader collapse of civic coinage in Asia Minor during the Crisis of the Third Century.