Watch List notes:

Constantius I, as Caesar (Maximian Herculius, 286-310), Argenteus, Nicomedia, c. AD 295; AR (g 3,19; mm 18; h 7); CONSTANTI - VS CAESAR, laureate head r., Rv. PROVIDEN - TIAE AVGG, four-turreted camp-gate with doors thrown back; in ex. SMNΓ. RIC 21.
Very rare. Good extremely fine.