Constantine I. AE Follis. AD 313-314. Arles. 

IMP CONSTANTINVS PF AVG, laureate, mantled bust left, holding eagle-tipped 
sceptre
PROVIDE-NT-IAE AVGG, Moneta standing right on prow, holding cornucopiae, 
received by turreted Arles standing left, holding sceptre. 

Mintmark PARL.

RIC VII Arles 31; Sear 16031. 
Rated R5.

Image is from RIC VII.
Marks the opening of the Arles mint after the transfer of staff 
to that mine from the recently closed Ostia mint.