Constantine II, as Caesar, 317 - 337 AD
AE Follis, Nicomedia Mint, 21mm, 3.11 grams
Obverse: CONSTANTINVS IVN NOB C, Laureate, draped and cuirassed bust of Constantine left.
Reverse: PROVIDENTIAE CAESS, Campgate with no doors, two turrets and star above, SMN Gamma in exergue.
RIC 93