Septimius Severus And Caracalla. 193-211 AD. AR Denarius. Struck 201 AD. 

SEVERVS AVG PART MAX, laureate head of Septimius right
ANTONINVS AVGVSTVS, laureate and draped bust of Caracalla right, seen from behind. 

RIC 157, RSC 2a, BMC 187

With permission of Numismatica Ars Classica.