Silver denarius, 19mm, 2.94gm, issued AD 214 Rome mint.
Obv: ANTONINVS PIVS AVG GERM, Laureate head right.
Rev: PM TRP XVII COS IIII PP, Serapis, wearing polos on head, standing front, head left, raising right hand and holding transverse sceptre.
References: see Sear 6829, RIC 244, RSC 241.