Constantine I the Great AD 307-337, Ticinum Mint, ca. AD 320-321.
Laureate head of Constantinus I right, CONSTANTINVS AVG;
VOT_XX with crescent below, all within wreath, DN CONSTANTINI MAX AVG around, in exergue QT
RIC VII 167. Very fine. Size: D: 18.7 mm; 2.81g