Bronze AE3, 17mm, 2.51gm, issued AD 367-375 Siscia mint.
Obv: DN GRATIANVS PF AVG, Diademed, draped and cuirassed bust right.
Rev: GLORIA ROMANORVM (ΓSISC in ex.), Emperor advancing right, dragging captive with right hand and holding labarum in left, M in left field, star and P in right.