Constantine I AE follis, Rome. AD 318-319.

CONSTA-NTINVS AVG, cuirassed bust right wearing 
high-crested helmet.
VIRTV-S AVGG, campgate, 8 layers, three turrets, no star 
above, no doors.

P-R across fields.
Mintmark RT.

RIC VII Rome 167; Sear 16306.
Rated R5.

Contributed by CarpeDiem Numismatics, July 2017