Æ28 - Gallienus (sole reign) (C G I H PARI PII V)

Parium, a Roman colony on the southern shore of the Propontis, retained the right to strike bronze coinage well into the third century — a privilege not automatically extended to all Asian cities and one that required ongoing imperial favor. Under Gallienus's sole reign, following the capture of his father Valerian by Shapur I in 260 AD, the eastern mints and civic issues faced acute disruption as the empire fractured under simultaneous military pressure from the Sassanids, the breakaway Gallic Empire, and the Palmyrene succession.

The colony's magistrate name abbreviation preserved in the obverse legend is the primary tool for sequencing Parium's output from this period.