Constantine II AE3. 

Obv: DN FL CL CONSTANTINVS NOB C, laureate, draped bust left holding globe 
  and sceptre in left hand, mappa in right hand 
Rev: PROVIDENTIAE CAESS, campgate, 3 turrets, 7 layers, no doors. 
Mintmark: .MHTE. 

RIC VII Heraclea 26, rated R5

Contributed by Dane for George Clegg (biggyg2), August, 2006.