Constantius II, AE20, Thessalonica.

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right.
FEL TEMP RE-PARATIO, soldier spearing fallen horseman who is
bare-headed, clutching horse's neck.
S in left field.
Mintmark TS gamma

RIC VIII Thessalonica 187 var (S instead of dot S dot fieldmark)

Contributed by David McCallum, April 2012.