Valentinian I (364-375) Æ Follis (16,6mm, 1.9g). Thessalonica. Diademed bust right, draped and cuirassed. R/ Emperor walking right with head turned back while grasping bound captive at the top of the head with right hand and holding a banner with "Chi-Rho" on it. (Labarum). TESB in exergue. RIC IX, 16a.