Constans AE3. 

Obv: CONSTAN-S PF AVG, rosette-diademed, draped, cuirassed bust right 
Rev: VICTORIAE DD AVGGQ NN, two Victories facing each other with wreaths. 
Mintmark: GSIS, in centre: N. 

RIC VIII Siscia 189, rated rare

Contributed by Dane, October, 2005.