Æ22 - Trebonianus Gallus COL AVGO, TROA

Alexandria Troas was a Roman colony whose autonomous coinage outlasted most other provincial mints in Asia Minor, continuing well into the third century when civic bronze issues were dying out across the region. Under Trebonianus Gallus, the city was still invoking its colonial status — COL AVGO referencing its foundation as Colonia Augusta — a designation tied ultimately to Augustus's own resettlement of the site around 12 BC using veterans from his Actian campaigns.

The reign was short and troubled: Gallus spent much of it managing plague, Gothic incursions across the Danube, and a ransom arrangement with the Goths that his contemporaries found humiliating. He was killed by his own troops in 253.