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

KOMMODW KAIC CEB UIW, bare-headed, draped and cuirassed bust right. 
GERMAN CARMAT, garlanded altar surmounted by three corn-ears. 

RPC online 8013. Metcalf 138 (b) corr.

Courtesy of Helios Auction 5, March 2011