Constantius II AE22, Nicomedia.

DN CONSTAN-TIVS PF AVG, pearl diademed, draped, cuirassed bust right
FEL TEMP RE-PARATIO, soldier spearing fallen horseman who is 
bearded, wears cap, reaching backwards. 

Gamma in left field. 
Mintmark: SMN Gamma 

RIC VIII Nicomedia 84, rated C3

With permission of Solidus Numismatik auction 15, Lot 381, May 2017