Constantine I, AE follis, Ticinum.

IMP CONSTANTINVS PF AVG, laureate, draped and cuirassed bust right, seen from the back.
SOLI INVI-C-TO COMITI, Sol standing left, holding globe and raising right hand. 

Cross in left field, star in right field. 
Mintmark PT.

RIC VII Ticinum 43; Sear 16088.
Rated R4.

Contributed by Richard Demarco of Carpe Diem Numismatics, March 2018.