City commemorative, AE18, Cyzicus.

Obv: CONSTANT-INOPOLIS, Bust of Constantinopolis left, wearing pearl-diadem and crested helmet, necklace and 
ornamental mantle, holding sceptre over shoulder.
Rev: no legend, Victory standing facing on prow, head left, 
resting left hand on shield, holding sceptre in right.

Mintmark SMKB.

RIC VII Cyzicus 93, rated R3, rare.

From Dane's collection, Nov. 2010.