Constantine II, AE3, 318-320, Heraclea, Officina 4D N FL CL CONSTANTINVS NOB CLaureate bust left, wearing imperial mantle, globe and scepter in left hand, mappa in rightPROVIDEN_TIAE CAESSCampgate with six rows, three turrets, no doors, no star above, top and bottom rows empty blocks. SMHD in exergue 18mm x 20mm, 3.12g