Constantine I, AE follis, Rome. AD 312-313.

IMP CONSTANTINVS PF AVG, laureate, draped and cuirassed bust right.
SOLI INVICTO COMITI, Sol standing front, looking left, chlamys spread over both shoulders, holding globe and raising right hand. 

Mintmark RP.

RIC VI Rome 323a; Sear 16093
Scarce.

Contributed by Richard Demarco of Carpe Diem Numismatics, May 2019.