★ Very interesting ★
Constantine I the Great (307/10-337) Bl follis (Bronze, 23mm, 3.79g) Rome, 317.
Obv: IMP CONSTANTINVS P F AVG, laureate, draped, and cuirassed bust right
Rev: SOLI INVICTO COMITI, Sol standing left, holding globe and raising right hand; A in left field, RP in exergue.
Ref: RIC 78.