Constantine I, 307/310-337. Follis (Bronze, 21 mm, 4.18 g, 6 h), Rome, 312-313. IMP C CONSTANTINVS P F AVG Laureate and cuirassed bust of Constantine I to right. Rev. MARTI CON-SERVATORI / R S Mars standing front, but slightly turned to right, head to left, resting his right hand on shield set on ground and holding spear in his left. RIC -. Apparently unique. Struck from a worn reverse die, otherwise, good very fine.