Constantius I AE follis. 

Obv: FL VAL CONSTANTIVS NOB CAES, laureate head right 
Rev: GENIO POPV-L-I ROMANI, Genio standing left, modius on head, naked except 
 for chlamys over left shoulder (falls low), holding patera from which 
 liquid flows, and cornucopiae. 
Mintmark dot TSA dot. 

RIC VI Thessalonica 22a, rated C2.

Courtesy of Zeus Coins, May 2010