Æ22 - Trebonianus Gallus COL AVG TRO

Alexandria Troas, a Roman colony in the Troad, produced a substantial civic bronze coinage through the mid-third century — unusual for a Greek-speaking region, but explained by the city's formal colonial status, which entitled it to mint Latin-legend bronzes in the Roman provincial tradition. Production appears to have wound down sharply after 253, likely disrupted by the chaos following Gallus's murder and the near-simultaneous deaths of Aemilianus and the opening of Valerian's reign.

The reference IX#476 places this within Bellinger's 1961 corpus of Troas coinage, still the primary scholarly framework for the series.