Constantine the Great AE26 Follis, Trier mint, 307 AD. Obverse: FL VAL CONSTANTINVS NOB C, D Laureate, cuirassed bust right. Reverse: MARTI PATRI CONSERVATORI, Mars standing right, holding reversed spear and leaning on shield. In field: S-A. Exergue: PTR RIC 725. Contributed by Yuri Kabanov, April, 2006.