Constantine I, AE Follis, 310-313, Group IV, Class II, Treveri, Officina 1IMP CONSTANTINVS P F AVGLaureate, cuirassed bust rightMARTI CO_NSERVATORIMars, helmeted, standing right, transverse spear in right hand, left hand resting on shieldT | F across fieldsPTR in exergue23mm x 24mm, 4.57g