Severus Alexander Denaarius 

Obv: IMP C M AVR SEV ALEXAND AVG - Laureate bust right, draped and cuirassed. 
Rev: P M TR P COS P P - Mars standing left, holding olive branch and spear. 
Rome mint: May to Dec AD 222 
RIC IVii, 7, page 71 - Cohen 207 - SEAR RCV II (2002), #7895v, 
page 647 (VF $25 - XF $75)3.47g 

With permission of Numismatik Lanz, 2008.