Constantine I, AE Follis, Autumn 308-Spring 309, Group III, Class III, Lugdunum, Officina 1IMP C CONSTANTINVS P F AVGLaureate, cuirassed bust right, parallel laurel ties MARTI PATRI PROPVGNATORI Mars, nude, helmeted, advancing right, chlamys flying behind, spear pointing forward in right hand, shield in left CI | H / S across fieldsPLC in exergue24mm x 27mm, 5.71g