Constantius II, AE23 of Constantinople. AD 348-351.

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right.
FEL TEMP-REPARATIO, helmeted soldier spearing fallen horseman, who is wearing a Phrygian helmet, no beard, clutching horse's neck.

Gamma in left field. 
Mintmark CONSA

RIC VIII Constantinople 79 var (rev legend break).

Contributed by Gordon Jensen, June 2014