Trajan, AD 98-117. Roman Provincial Æ 29 mm, 15.86 g, 12 h. Syria, Seleucis and Pieria, Antioch, AD 115-116. Obv: ΑΥΤΟΚΡ ΚΑΙϹ ΝΕΡ ΤΡΑΙΑΝΟϹ ΑΡΙϹΤ ϹΕΒ ΓΕΡΜ ΔΑΚ, laureate head, right. Countermark: laurel branch in incuse rectangle, Howgego 378 (69 sp.). Rev: S·C in laurel wreath; Є below. Refs: RPC III 3616; cf. BMC 20, p. 185, 286 (with same countermark); Wruck 196; McAlee 489(e). Notes: The Greek obverse inscription corresponds to the Latin IMP CAES NER TRAIANO OPTIMO AVG GER DAC, in use on Imperial obverse inscriptions from AD 115-116.* According to Romancoins.info, this is one of a group of countermarks on eastern provincial coins with possible links to the legionary administration of the eastern frontier towards Persia. The countermark was applied before A.D. 132-135. Post anything you feel is relevant! *Mattingly, Harold. Coins of the Roman Empire in the British Museum. Vol. III: Nerva to Hadrian, British Museum, 1966, p. lxiv.