Constantine I (307/10-337) AE Follis (Bronze, 19mm, 3.04g) Siscia, 320.
Obv: CONST-ANTINVS AVG, helmeted and cuirassed bust of Constantine I right
Rev: VIRTVS EXERCIT, two captives seated at foot of standard inscribed VOT/XX in two lines; S-F/(HL)//BSIS*.
Ref: RIC 120.