Maximianus AE Follis. AD 296-297 AD. 

IMP MAXIMIANVS P AVG, laureate head right.
GENIO POPVLI ROMANI, Genius standing left, modius on head, 
naked except for chlamys over left shoulder, holding patera 
and cornucopiae.
C-Gamma across fields. 
Mintmark TR.

RIC VI Trier 181b