Pacatian. ca AD 248-249. AR Antoninianus 23mm, 2.15 g. Viminacium mint. 

IMP TI CL MAR PACATIANVS AVG, radiate, draped and cuirassed bust right.
FIDES MILITVM, Fides standing left, holding standard in
each hand.
RIC 3 var (has standards in background); RSC 4 var (ditto) Szaivert, Beginn 5.

Very rare. 
With permission of cngcoins.com, May 2013