Obv: Laureate head of Caracalla right with the legend ANTONINVS PIVS AVG
Rev: Mars standing left, holding reversed spear and resting right hand on shield with the legend PONTIF TR P VIII COS II
Rome Mint
Sear 6859 ; RIC 81 ; RSC 421 ; BMC 482
Silver, 3.69 grams, 21.1 mm