Valens. AE. Nicomedia. 

Obv: DN VALENS-PF AVG, pearl diademed, draped, cuirassed 
bust right

Rev: GLORIA RO-MANORVM, Emperor advancing right, holding 
labarum, dragging captive

Mintmark: SMN gamma

RIC IX Nicomedia 9c, rated scarce.

From Dane's collection, Jan. 2010.