Constantine The Great (307-337). AE, Follis. (Bronze, 4.00 g. 22 mm.) Siscia.
Obv: IMP CONSTANTINVS P F AVG. Head of Constantine I, laureate, right.
Rev: IOVI CONSERVATORI, B, SIS. Jupiter standing left, holding sceptre and Victory; to left, eagle standing left, head right, with wreath in beak.
Ref: RIC 15.