Claudius II Antoninianus, Cyzicus.

Obv: IMP C M AVR CLAVDIVS AVG, radiate, cuirassed bust right,
two dots beneath bust.
Rev: VICTORIAE GOTHIC, two captives bound and seated back to back
at the foot of a trophy. 
Mintmark SPQR.

RIC V-1, 251 var (bust type). Rare