Carinus AE Antoninianus. 282-284 AD. 

Obv: IMP C CARINVS P F AVG, radiate, cuirassed bust right, seen
from the back.
Rev: VIRTVS AVGG, Carinus standing right, holding short sceptre 
and Victory on globe with Carus, standing left, holding long
sceptre. 

B in lower centre.
Mintmark XXI.

RIC V-2, 326 var (bust type). 

With kind permission of ARC on vcoins.com, April 2010.