Postumus, AE Double Sestertius, 259-268 AD. Lyons. 

Obv: IMP CM CASS LAT POSTVMVS P VG (sic), radiate, draped, cuirassed bust right. 
Rev: FIDES MILITVM, Fides standing facing, head left, holding two standards.

RIC V-II Lyons 123 var (obv legend); Sear5 11040 var (ditto). 

Courtesy of TimeLine Auctions (www.timelineauctions.com), February, 2013