Diocletian, AE follis, Trier. AD 298-299. 29 mm. 

IMP DIOCLETIANVS P AVG, laureate, cuirassed bust right.
GENIO POPV-LI ROMANI, Genius standing left, modius on 
head, naked except for chlamys over left shoulder, 
holding patera and cornucopiae.
Left field: B
Right field: Star
Mintmark: TR.

RIC VI Trier 292a.
Rated common.

Offered by CHS Basel Numismatics, on MA Shops. Feb. 2014.