Diocletian, AE Follis. 296-297 AD. Trier. 

IMP DIOCLETIANVS AVG, laureate head left
GENIO POPV-LI ROMANI, Genius, standing left, modius on head,
 naked except for chlamys over left shoulder, holding patera
 and cornucopiae, A-gamma across fields, mintmark TR. 

RIC VI Trier 181a.

With permission of Roma Numismatics, March, 2010