Constantius I. AE Follis. 305-307 AD. Trier. 

IMP CONSTANTIVS AVG, laureate, cuirassed bust right
GENIO POPV-LI ROMANI, Genius standing left, tower on head, 
loins draped, holding patera and cornucopiae. 

S-F across fields. 
Mintmark PTR. 

RIC VI Trier 657a.

With permission of Roma Numismatics, October, 2009