CONSTANTIUS II, A.D. 337-361, AE3 (18mm), F+.

Obverse: DN CONSTAN TIVS PF AVG. His diademed bust, right.
Reverse: FEL TEMP REPARATIO. Soldier spearing fallen 
horseman who is bare-headed, reaching backwards.
Mintmark BSIRM. 

from Dane's Fel Temp collection. Aug. 2011.
www.catbikes.ch/helvetica/feltemps.htm