Constantine I. A.D. 307/10-337. AE follis (19.0 mm, 3.29 g, 6 h). Rome mint, struck A.D. 318-9. CONSTANTINVS AVG, helmeted and cuirassed bust right / ROMAE AETERNAE, Roma seated right on round shield, holding shield inscribed X/V; P-R in fields, RP in the exergue. RIC 146. gVF, sandy red patina. Very Rare.