Constantine I AE Follis. Cyzicus.

Obv: CONSTAN-TINVS AVG, laureate head right. 
Rev: PROVIDEN-TIAE AVGG, Campgate with six layers,
two turrets, star above, no doors. 

Mintmark SMK Gamma.
RIC VII 58, rated R5.

Contributed by Miroslav Jovanovic, Nov. 2011.