Commodus as Caesar, AR Tridrachmon, 175 AD. 8.41 g. 

KOMMODW KAIC CEB UIW, bare-headed, draped and cuirassed bust right. 
GERMAN CARMAT, tetrastyle temple on podium of three steps, eagle in 
pediment; Roma standing within with spear and shield. 

RPC online 7057.5 (this coin). Metcalf 139 corr.

Courtesy of Helios Auction 5, March 2011