Claudius II Gothicus. AD 268-270. Antoninianus. Rome mint, AD 268-269. 

IMP CLAVDIVS AVG, Radiate and cuirassed bust right
VICTORIA AVG, Victory standing left, holding wreath 
and palm. 
A in left field.
RIC V-1, 105. 

Contributed by Online Store of the Forum Ancient Coins, May 2009