Constantine I. AE Follis. 307-309 AD. Aquileia. 

Obv: IMP C CONSTANTINVS PF AVG, laureate head right
Rev: CONSERV-VRB SVAE,  Roma seated facing, head left, in 
hexastyle temple, holding globe and sceptre, shield by side,
 knobs as acroteria and X in pediment; AQP in ex. 

RIC VI Aquileia 121c, rated scarce.

With permission of Roma Numismatics, June 2009