Caracalla AR Denarius, Serapis reverse Caracalla (198-217 AD). AR Denarius (18mm, 3.3 g), Rome 214 AD. Obv. ANTONINVS PIVS AVG GERM, Laureate head right. Rev. P M TR P XVII COS IIII P P, Serapis, wearing polos on head, standing front, head left, raising right hand and holding transverse sceptre.