VOT XX follis of Constantine the Great (307-337 AD), Ticinum mint, Roman Empire

CONSTANTINVS AVG, laureate head right / VOT//XX/crescent within wreath, DN CONSTANTINI MAX AVG around, TT in exergue. 20mm, 3.3 grams. Superb and smooth brown patina, Ticinum mint, RIC 167, minted ca.322-325 AD.