Æ17 - Domitian ΕΠΙ ϹΤΡΑ ΚΛ ΚΕΦΑΛΙΩΝΟϹ

Kephalion served as strategos of Pergamum under Domitian, and his name on the coin reflects the Greek city's retention of local magistrate coinage well into the imperial period — a civic privilege Pergamum guarded carefully, having been the first city in Asia to receive permission to establish a cult of Rome, back in 29 BC. The strategos title here is not honorary; these magistrates held genuine administrative authority over the mint's output.