Constantine I AE Follis. 

Obv: CONSTA-NTINVS AVG, helmeted, cuirassed bust right 
Rev: VIRTVS-EXERCIT, Trophy with captives seated on either side. 
Mintmark: STR; Left field: star. 

RIC VII Trier 249, rated R5.

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