Constantine I Follis. 

Obv: IMP CONSTA-NTINVS AVG, laureate & draped bust left holding eagle-tipped 
 sceptre & mappa 
Rev: PROVIDEN-TIAE AVGG, campgate, 3 turrets, 7 layers, no doors, no star 
 above. 

Mintmark: MHTD. 

RIC VII Heraclea 16 var (unlisted officina), rated R4. 

Contributed by Dane for Joe Guerra. One other in Jerry Scoppa's 
 collection, April, 2008.