Troas, Alexandria AE (Bronze, 4.64g, 20mm) Pseudo-autonomous, Time of Trebonianus Gallus to Valerian I (251-260)
Obv: COL TROA, Turreted and draped bust of Tyche right; vexillum to left.
Rev: CO AVG TRO, Eagle, with wings above, standing right on head and neck of bull facing slightly right.
Ref: Bellinger A490.