Roman Imperial, Constantius I, AR Argenteus, Nicomedia
3.03 g, 19 mm, aVF
Obverse: CONSTANTIVS CAESAR, laureate head right
Reverse: PROVIDENTIAE AVGG, four-turreted camp-gate open, with doors thrown back; each turret surmounted by facing eagle, SMNΓ in exergue
Reference: RIC 21