Silver denarius, 18mm, 3.42gm, issued AD 183 Rome mint.
Obv: M COMMODVS ANTON AVG PIVS, Laureate head right.
Rev: TRP VIII IMP VI COS IIII PP, Pax, draped, standing left, holding branch and cornucopia.
References: see Sear 5720, RIC 64, RSC 908a.