Constantine II AE follis, Heraclea. AD 325-326. 

CONSTANTINVS IVN NOB C, laureate, draped, cuirassed bust right 
PROVIDEN-TIAE CAESS, campgate, eight layers, two turrets, star above, no doors.

Mintmark SMHB.

RIC VII Heraclea 77

With permission of Numismatik Naumann, Dec 2015