Constantinus I 'the Great' (306-337 AD). AE Nummus, Thessalonica, 320 AD.
Obv: CONSTANTINVS AVG, Helmeted and cuirassed bust to right.
Rev: VIRTVS EXERCIT, Standard inscribed VOT / XX on two lines with captive seated on either side; S - F across fields, (dot) TS (dot) Γ (dot) in exergue.
RIC VII Thessalonica 75.

Weight: 2.63 g.
Diameter: 19 mm.