Constantine I (307-337). Commemorative series. AE Follis, Rome mint. Obv. RO-MA. Helmeted, draped and cuirassed bust of Roma right. Rev. P-R. Emperor, helmeted, in military dress, standing facing, head to right, holding spear and resting on shield. RIC VIII 104. 1.83 g. 15.70 mm. RRR. Extremely rare and choice example with intact dark patina. EF/Good EF.