Marcus Aurelius (AD 161-180), Silver Denarius, mint of Rome, December AD 161-Decemer AD 162, 3.4 gms., IMP M AVREL ANTONINVS AVG, bare head right, rev. CONCORD AVG TR P XVI, Concordia seated left holding patera and resting left arm on statue of Spes, COS III in exergue (RIC 35; BMC 177), brilliant mint state and rare thus