Marcus Aurelius, AE20, Pella. 161-180 AD.

Obv: (from top right) IMPEPTOR ANTON PNVS(sic), bare-headed,
draped and cuirassed bust right.
Rev: COL IVL AVG PELLA, Pan seated on a rock, right hand raised 
over his head, resting arm on rock or syrinx. 

BMC 37.

British Museum, Jan. 2011.