Constantine I (306-337), Rome, AE follis (Bronze, 23,2 mm 3,78 g), 312-313.

Constantine I (306-337), Rome, AE follis (Bronze, 23,2 mm 3,78 g), 312-313.
Obv: IMP CONSTANTINVS PF AVG, laureate, draped and cuirassed bust of Constantine right.
Rev: S P Q R OPTIMO PRINCIPI, aquila between two signa, RP (?) in exergue.
Ref: RIC 349a.