Constantius II, AE19, Arles.

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right.
FEL TEMP-REPARATIO, soldier standing left, spearing a
fallen horseman who is wearing a Phrygian helmet, reaching
backwards.
M in centre.
Mintmark PCON

RIC VIII Arles 269, but unlisted rev. break.
Rare

Dane's collection, August 2011.