Marcus Aurelius AR Denarius, 166 AD. Obv: M ANTONINVS AVG ARM PARTH MAX: Head of Marcus Aurelius, laureate, right. Rev: TR P XX IMP IIII COS III PAX: Pax, draped, seated left, holding branch in right hand and cornucopiae in left hand - RIC III Marcus Aurelius 159 - 3.06g, 18mm