Æ34 - Philip I ΘΥΑΤΕΙΡΗΝΩΝ ΟΜΟΝΟΙΑ Κ ϹΜΥΡΝΑΙΩΝ Ϲ Α Ο ΑΡΧΙΜΗΔΟΥϹ

This piece was struck under the homonoia convention — a formal friendship alliance between Thyatira and Smyrna, two of the most commercially active cities in the Lydian and Ionian regions respectively. Such agreements were not merely ceremonial; they governed trade relations, religious festivals held jointly, and the mutual recognition of civic honors. The magistrate named in the legend, Archimedes, is otherwise unknown from other sources, making this coin one of the few surviving attestations of his office.

Philip I's reign saw an unusual proliferation of homonoia issues across Asia Minor, likely tied to his need to court provincial loyalty ahead of the Roman millennium celebrations of 248 AD.