Æ29 - Gallienus (sole reign) (ΕΠ Ϲ ϹΕΞ ΚΛ ϹΕΙΛΙΑΝΟΥ ΠΕΡΓΑΜΗΝΩΝ ΕΦΕϹΙΩΝ ΟΜΟΝΟΙΑ)

The homonoia coinage between Pergamum and Ephesus belongs to a competitive civic tradition in which rival Asian cities negotiated — sometimes bitterly — over shared cult rights, festival precedence, and the coveted title of neokoros. Striking a joint issue was as much a political settlement as a monetary one. The magistrate named in this legend, Seilianus, is attested across several homonoia issues of this period, suggesting he held his position through much of Gallienus's sole reign following the capture of Valerian by Shapur I in 260.