Watch List notes:

Constantine I (306-337), Nummus, Antiochia, AD 325-326; AE (g 2,94; mm 19; h 6); CONSTAN - TINVS AVG, laureate head r., Rv. PROVIDEN - TIAE AVGG, camp gate; above, star; in ex. SMANTε. RIC 63.
Rare. Porous metal, about extremely fine.