Commodus, AE Medallion of Pergamon, Mysia. 27.44 g. 

M AVR KAICAR KOMODOC, bare-headed, draped, cuirassed bust right.
EPI CTRA KL NIKOMHDOUC B NEWKORWN PERGAMHNWN around and beneath
naked, helmeted warrior, holding spear and round shield, 
standing right, fighting with a kneeling opponent holding a
sword; shield behind, upright spear to left. 

RPC online 3245; SNG BN 2149

Courtesy of Helios Auction 5, June 2011