Æ27 - Gallienus (sole reign) (ϹΥΝΝΑΔΕΩΝ ΙΩΝΩΝ)

Synnada, a Phrygian city whose wealth derived largely from its famous marble quarries — the marmor Synnadicum prized across the Roman world — struck civic bronzes through the provincial system well into Gallienus's sole reign after Valerian's catastrophic capture by Shapur I in 260 AD. That capture effectively ended centralized imperial oversight of eastern provincial minting, giving cities like Synnada unusual latitude in their coin production during these final years of the Greco-Roman civic bronze tradition, which collapsed almost entirely by 268.