Constantine I, AE Follis, Autumn 307-End of 308, Group III, Class I, Trier, Officina 1 IMP CONSTANTINVS P F AVGLaureate, cuirassed bust right MARTI PATRI CONSERVATORI Mars, helmeted, nude, standing facing, head right, vertical reversed spear in right hand, left hand on large oval shield set on ground behindS | A across fieldsPTR in exergue 25mm x 27mm, 6.77g