Constantine I, AE follis, Arles. 19 mm, 3.05 g. 

IMP CONSTANTINVS PF AVG, laureate, draped and cuirassed bust right.
SOLI INVICTO COMITI, Sol standing right, looking left, chlamys across left shoulder, holding globe and raising right hand.

M-F across fields.
Mintmark ARL Delta.

RIC VII Arles 102 ADD (unlisted officina.

With permission of CGB Numishop, item brm411145