This is an otherwise common coin (though in good shape and silvered), but the soldier on the reverse has a decorated shield.
Constantius II
A.D. 351- 354
22x23mm 5.8gm
DN CONSTAN-TIVS P F AVG, pearl-diademed, draped and cuirassed bust right.
FEL TEMP RE-PARATIO, Soldier spearing fallen horseman, Γ in left field.
In ex. SMKE
RIC VIII Cyzikus 92