VOT XX follis of Constantine I (317-337 AD), Heraclea mint, Roman Empire

CONSTANTINVS AVG, diademed bust of Constantine facing right a / DN CONSTANTINI MAX AVG, laurel wreath enclosing "VOT/XX", SMHB in exergue. 20mm, 2.0 grams. Mint of Heraclea. RIC 60, minted 324 AD.