Constantine I AE Follis, Lyons. 3.91 grams, 22.17 mm. 313-314 AD.  

Obv: CONSTANTINVS PF AVG, laureate, cuirassed bust right.
Rev: SOLI INVIC-TO COMITI, Sol standing left, chlamys draped 
across chest and left shoulder, holding globe and raising 
right hand. 

S-F across fields. 
Mintmark PLG in exergue.

RIC VII Lyons 7.
With permission of TimeLine Originals (www.time-lines.co.uk), June, 2011