Constantine I as Caesar, AE Half Follis, c.Summer 307, Group II, Class IV (b), Trier, Officina 1FL VAL CONSTANTINVS N CLaureate, cuirassed bust right MARTI PAT_RI-PROPVG Mars, helmeted, nude, advancing right, transverse spear in right hand, shield in leftS | A across fieldsPTR in exergue 21mm x 22mm, 5.04g