Constantius II, AE Follis, Trier. 326 AD. 

FL IVL CONSTANTIVS NOB C, laureate, draped and cuirassed bust left.
PROVIDENTIAE CAESS, camp gate with six layers, two beacons, 
no doors, star above. 

Mintmark PTR dot in crescent.

RIC VII Trier 480.

Contributed by George Clegg (biggyg2), January, 2013