Æ21 - Gallienus sole reign) (C G I H (A)

Parium, a Roman colony on the Propontis coast, retained the right to strike local bronze throughout the imperial period — a privilege that became increasingly irregular under Gallienus as the central government's attention fragmented across usurpers, plague, and near-continuous frontier warfare. The sole reign issues from this mint are poorly documented in early scholarship, and attribution of individual die combinations has been refined substantially by more recent corpus work on Mysian provincials.