Carus, AE antoninianus, Rome mint. 

IMP CM AVR CARVS PF AVG, radiate, cuirassed bust right.
VICTORIA AVGG, Victory advancing right, holding wreath and palm.
Mintmark AAK. 

RIC V-2, 44 var (mintmark); ERIC 89; Tantalus 1477
Scarce.

Courtesy of Ancient Treasures.