City Commemorative, AE3 306-337 AD. 

Obv: CONSTAN-TINOPLI, helmeted and laureate bust of 
Constantinopolis left, wearing imperial mantle. 
Rev: Victory standing left, foot on prow, holding sceptre 
and resting hand on shield
 
Mintmark CONSZ dot 

RIC VII Constantinople 79.

Submitted by Dane, October 2009