Carausius, AE antoninianus. Camulodunum. 

IMP CARAVSIVS PF AVG, radiate, draped, cuirassed bust right.
FORTVNA AVG, Fortuna standing left, holding simple rudder 
and cornucopiae. 

Mintmark C. 

RIC V-2, Camulodunum 235. 
Rare.