Quintillus, AE antoninianus, Siscia mint. 

IMP CM AVR CL QVINTILLVS AVG, radiate, cuirassed bust right.
TEMPORVM FELI, Felicitas standing left, holding caduceus 
and cornucopiae. 

RIC V-1 Siscia 76 var (unlisted bust type).
Rare.

With permission of Dirty Old Coins, 2003.