Æ28 - Valerian and Gallienus ΕΠΙ ΓΡ Α (Λ) ΤΑ (ΤΙ) ΚΟΡΙΝΘΟΥ / ΤΡΑΛΛΙΑΝΩΝ

Tralles, a prosperous city in the Maeander valley, was among the more active provincial mints during the joint reign of Valerian and Gallienus — a period defined by relentless military pressure on Rome's eastern frontier, including Valerian's catastrophic capture by Shapur I at Edessa in 260 AD, the only time a reigning Roman emperor was taken prisoner by a foreign enemy. The magistrate name partially preserved in the obverse legend, abbreviated as ΕΠΙ ΓΡ Α (Λ) ΤΑ (ΤΙ), reflects the Greek civic administrative tradition of naming the presiding strategos responsible for the issue.