Æ21 - Trebonianus Gallus COL AVG, TR (A)

Alexandria Troas retained its status as a Roman colony long after the city's founding under Augustus, and its civic bronze coinage continued uninterrupted through some of the most chaotic decades of the third century. Trebonianus Gallus came to power immediately after Decius and his son Hostilian both died in 251 — Decius killed at Abrittus fighting the Goths, making him the first emperor to fall in battle against a foreign enemy. The city minted through both catastrophes without interruption, a measure of just how locally self-sufficient colonial bronze production had become by this point.