Constantine II, as Caesar, 317 - 337 AD
AE Follis, Heraclea Mint, 18mm, 2.31 grams
Obverse: D N FL CL CONSTANTINVS NOB C, Laureate and draped bust left holding scepter and mappa.
Reverse: PROVIDENTIAE CAESS, Campgate with no doors, three turrets and star above, MHTE in exergue.
RIC 20