Æ21 - Valerian and Gallienus ΤΡΑΛΛΙΑΝΩΝ

Tralles, a prosperous city in the Maeander valley, was one of the few provincial mints that issued bronze coinage jointly in the names of both Valerian I and his son Gallienus during their co-emperorship — a relatively uncommon arrangement that reflects the deliberate projection of dynastic continuity at a moment when the empire was fracturing under simultaneous pressure from Shapur I's Sassanid campaigns in the east and repeated Gothic incursions across the Danube. Valerian's capture at Edessa in 260 AD effectively ended the joint reign, making issues from the co-emperorship period relatively short-lived.