Constantius Gallus, AE21 of Cyzicus.

DN FL CL CONSTANTIVS NOB CAES, bare-headed, draped, cuirassed bust right, Epsilon behind head.
FEL TEMP RE-PARATIO, soldier standing left, knee raised,
spearing fallen horseman who is unbearded, wearing Phrygian
helmet, reaching backwards.
Mintmark SMKS.

RIC VIII Cyzicus 101.