Watch List notes:

Constantine I the Great AD 307-337, Aquileia Mint, ca. AD 320-321.
Laureate head of Constantinus I right, CONSTANTINVS AVG;
VOT_XX flanked by two palm branches, all within wreath, DN CONSTANTINI MAX AVG around, in exergue AQP
RIC VII 104. Splendid details, excellent preservation, but slightly off-flan. Extremely fine. Size: D: 17.9mm; 3.07g