Constantine I, AE follis. Rome, AD 316.

IMP CONSTANTINVS PF AVG, laureate, draped and cuirassed bust right.
SOLI INV-I-CT COM DN, Sol, radiate, standing left, chlamys 
across left shoulder, holding Victory on globe and
raising right hand.

Star in left field, crescent in right field.
Mintmark RP.

RIC VII Rome 49; Sear IV 16942.
Rated R1.

Ebay sale by dionysos_numismatik.