Constantine I, AE follis, Rome, 316-317 AD.

IMP CONSTANTINVS PF AVG, laureate, draped, cuirassed bust right.
SOLI INV-I-CTO COMITI, Sol standing left, chlamys
across left shoulder, holding globe and raising right hand.
Captive at foot left, bare headed, bowing head, hands tied
(captive type Helvetica 6b, not in RIC for this issue).
Mintmark RS.

RIC VII Rome 52 var (captive type), Rare.

with permission of www.cgb.fr