177 AD., Commodus, as Caesar, Rome mint, Denarius, RIC 626.

Commodus, as Caesar, Rome mint, 177 AD.,
Denarius (17-19 mm / 2,97 g),
Obv.: IMP CAES L AVREL CO - MMODVS GERM [SARM] , laureate and cuirassed bust of Commodus right.
Rev.: TR POT II COS , Salus standing l., holding scepter and feeding snake coiled round altar.
RIC III, 264, 626 (Marcus Aurelius) (C) ; BMC IV (Marcus Aurelius) 748 (note) ; Coh. 741 ; RSC 741a .

Struck between the time when Commodus received the title of Imperator, in late 176 A.D., and when he became co-Augustus with his father in April, 177 A.D., and portrays Commodus, at age 15.