Pseudo Imperial coinage, times of Aurelius (161-180) AR Denarius (Silver, 2.91g, 16mm)
Obv: [IMP] M AVREL ANTONIN[VS AVG], bare head of Marcus Aurelius right
Rev: COS IIII around, emperor togate standing left, holding patera over tripod altar.
Ref: for obvesre see RIC III Aurelius 35 and others simillar, for reverse see RIC A. Pius 183