Marcus Aurelius (161-180) AR Denarius (Silver, 3.36g, 19mm) Rome, 166.
Obv: M AVREL AVG ARM-PARTH MAX, laureate head of Marcus Aurelius right
Rev: TR P XX IMP IIII COS III, Victory standing facing, head right, palm branch in right hand, shield inscribed VIC / PAR resting on palm tree to right.
Ref: RIC III 163.