Constantius I AE Follis. 305-306 AD. 

IMP CONSTANTIVS PF AVG, laureate, cuirassed bust right 
GENIO POPV-LI ROMANI, Genius standing left, tower on head, 
naked except for chlamys over left shoulder, holding patera 
and cornucopiae, S-F across fields, PTR in ex. 

RIC VI Trier 642a. Scarce.

With permission of Roma Numismatics, June 2009