Claudius II, Antioch, AE (Silvered) Antoninianus. 

IMP C CLAVDIVS AVG, Radiate head left.
NEPTVN AVG, Neptune standing left holding dolphin & trident

No mint- or other marks.

Ref: RIC 214 var

Notes: not in RIC for no exergual mark.

Contributed by Peter Dearing, November 2009