Constantine I AE Follis. 316 AD. 

Obv: IMP CONSTANTINVS PF AVG, laureate, cuirassed bust right 
Rev: SOLI INV-I-CTO COMITI, radiate Sol standing left, chlamys across left 
  shoulder, holding globe, raising right hand; M-F across fields 
Mintmark: ARLB. 

RIC VII Arles 101, rated R4. 

Contributed by Dane for George Clegg (biggyg2), October 2007