Constantius II, AE follis, 19mm, 3.6g , Trier mint, AD 324-325.

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

Mintmark STR. 

RIC VII Trier 456

Contributed by David Lowe, Dec. 2014