Constantius II, AE follis, hybrid, Trier. AD 327-328.

FL IVL CONSTANTIVS NOB C, laureate, draped, cuirassed bust left.
PROVIDEN-TIAE AVGG, campgate, 2 turrets, star above, 6 
layers, no door.
Mintmark STRE.

RIC VII Trier 506/504 hybrid (AVGG and CAESS).

Contributed by Robert Edwards, March 2014.
Another example in Keith Metzger's collection