Carinus Antoninianus. IMP CM AVR CARINVS AVG, radiate, draped, cuirassed bust right / AETERNIT AVGG, Aeternitas standing left holding phoenix on globe and raising robe. 

Mintmark: KAG. 
RIC V-2 247 Rome, rated common
Contributed by Dane for George Clegg (biggyg2), October 2007