Constantius II AE3. 329-330 AD.

Obv: FL IVL CONSTANTIVS NOB C, laureate, cuirassed bust left
Rev: PROVIDEN-TIAE CAESS, campgate, 2 turrets, 7 layers, star above, no door. 
Mintmark: SMKS

Almost fully silvered. 
RIC VII Cyzicus 64 var (unlisted officina), rated R5 (of the highest rarity). All officinae of RIC 64 are rated R5 - 
this one with unlisted officina is therefore even rarer.

Dane's collection, July 2009