Constantius I. AE Follis. Trier. 298-299 AD. 

FL VAL CONSTANTIVS NOBIL C, laureate, draped, cuirassed bust right
GENIO POPV-LI ROMANI, Genius standing left, modius on head, 
naked except for chlamys over left shoulder, holding patera 
and cornucopiae.

B-star across fields. 
Mintmark TR. 

RIC VI Trier 374 var (bust type). Very rare. RIC lists 
only laureate head right for this obverse legend and field marks = R2).

With permission of Roma Numismatics, Apr. 2010