Caracalla AE As. 214 AD. 

ANTONINVS PIVS AVG GERM, laureate head right
P M TR P XVII IMP III COS IIII P P S C, Mars standing 
left, foot on helmet, holding branch and inverted spear. 

RIC IV 532; Cohen 261. Scarce.

With permission of Roma Numismatics, August, 2009