Roman Imperial
Constantine I the Great (307-337 AD) Heraclea
AE or BI nummus (20.1mm, 3.2g)
Obv: IMP CONSTA-NTINVS AVG, laureate bust of Constantine I left in imperial mantle, seen from front, globe and scepter in left hand, mappa in right.
Rev: PROVIDEN-TIAE AVGG, campgate with three turrets, no doors, six stone layers; MHTB below.
RIC VII 16.