Galerius Maximian, AE Follis. 298-299 AD. Trier. 

MAXIMIANVS NOBIL CAESAR, laureate head right
GENIO POPV-LI ROMANI, Genius standing left, modius on head,
 naked except for chlamys over left shoulder, holding patera
 and cornucopiae. 

B in left field, star in right field. mintmark TR. 

RIC VI Trier 343b var (obv legend)

Not in RIC. RIC lists only the MAXIMIANVS NOBIL CAES as long obv. legend for the Genio series. 

With permission of Roma Numismatics, October, 2009