Constantine I, AE3, 316, Trier, Officina 1 CONSTANTINVS P F AVGLaureate, cuirassed bust right MARTI CON_SERVATORI Mars, helmeted, in military dress, standing facing, head right, reversed spear in right hand, left hand resting on shield T | F across fields ATR in exergue 19mm x 21mm, 4.32g