Diocletian. AE Follis. 300-301 AD. Trier. 

IMP DIOCLETIANVS PF AVG, laureate head right
FORTVNA REDVCI CAESS NN, Fortuna standing left, holding
rudder over globe and cornucopiae, star in right field, 
ATR in ex. 

RIC VI Trier 400, rated Scarce

With permission of Roma Numismatics, August 2009