Elagabalus, AE As, AD 218-222. Rome mint. 

IMP CAES M AVR ANTONINVS PIVS AVG, laureate, draped and cuirassed bust right.
ADVENTVS AVGVSTI, SC, Emperor on horseback left, holding 
sceptre, raising right hand.

RIC 341; Cohen 7; Sear 7598.

With permission of Numismatica Ars Classica, March 2010.