The poll needs to be re-written with different questions. I know what it is, but the questions should be 'is it Roman or Greek' and or 'what is the god on the reverse'.
I believe that is a Caracalla from Alexandria Troas. The reverse is Apollo resting his foot and holding a branch.
Head on Theodosius, I am quite happy with both answers. And so is this coin no mystery for me anymore. Caracalla, AE of Alexandria, Troas. AD 209-214. M AVR ANTONINVS PIVS AV, laureate head right / COL AVG TROAD, Apollo standing left, foot on low cippus, holding branch. Paris 264