Quintillus, AE antoninianus, Cyzicus mint. 

IMP QVINTILLVS PF AVG, radiate, draped bust right, one dot
beneath bust.
FIDES MILITVM, Fides standing left, holding standard
and spear. 

RIC V-1 Cyzicus 82, rated scarce.

ebay sale by AAH, 2003.