Constantius I, as Caesar, 293-305, Argenteus

Constantius I as Caesar, Argenteus, AR, AD 293–305; Thessalonica mint, struck c. AD 300–305; 3.31 g; 20 mm. Obv. CONSTANTIVS NOB CAES, laureate head right. Rev. VIRTVS MILITVM, four-turreted campgate with open doors; star above arch. Post-reform silver issue on the argenteus standard, struck on a compact flan with precise, tetrarchic-style engraving. RIC VI Thessalonica 12a. Introduced under Diocletian’s reform c. AD 294, the argenteus was a high-fineness silver coin struck at roughly 1/96 of the Roman pound to restore a stable silver standard. The Tetrarchic coinage emphasized military stability and imperial collegiality; the VIRTVS MILITVM legend and campgate reverse highlight the army’s role in defending fortified frontiers. Thessalonica served as a key Balkan mint supplying forces along the Danubian corridor. Issued while Constantius held the rank of Caesar, this coin belongs to the transitional phase preceding his elevation to Augustus and the subsequent rise of the Constantinian dynasty.