Caracalla (198-217 AD). Rome
AR Denarius (19.1mm 3.16g)
Obv: ANTONINVS PIVS AVG Laureate head of Caracalla to right.
Rev: PONTIF TR P VIIII COS II Mars standing front, head to left, placing his right hand on shield set on ground and holding inverted spear in his left.
BMC 498: Cohen 424: RIC 83a