Constantine I AE3. 

Obv: CONSTAN-TINVS AVG, pearl diademed bust right 
Rev: VIRTV-S AVGG, campgate, 4 turrets, 7 layers, star above, opened, 
 panelled doors; S-F across fields
Mintmark: SCONST

RIC VII Arles 321, rated C1

Contributed by Dane for George Clegg (biggyg2), October 2007