Constantine II AE3 of Cyzicus. AD 324-325.

Obv: CONSTANTINVS IVN NOB C, laureate, draped, cuirassed bust left 
Rev: PROVIDEN-TIAE CAESS, campgate, six layers, two turrets, 
star above, no doors. 
Mintmark: SMK delta. 

RIC VII Cyzicus 26.

With permission of cngcoins.com, Feb. 2014.