Æ23 - Valerian and Gallienus ΙΕΡΑϹ ΝΕΙΚΟΠΟΛΕΩϹ, Α

Nicopolis ad Isthmon — distinct from the more prolific Nicopolis ad Mestum in Moesia — struck provincial bronzes under the joint reign of Valerian I and his son Gallienus during one of the Roman Empire's most chaotic stretches: the opening phase of the Crisis of the Third Century. Valerian's capture by the Sasanian king Shapur I at Edessa in 260 AD effectively ended this joint coinage, making issues attributable to the co-reign a terminus ante quem that requires no guesswork.

The "A" designation indicates the smallest denomination in the local civic series.