Constantine I, AE follis. Siscia. 18mm, 2.90 g. AD 321-324. CONSTANTINVS AVG, laureate head right. DN CONSTANTINI MAX AVG around VOT XX within wreath. Mintmark Epsilon SIS wreath. RIC VII Siscia 177; Sear 16220. Exceptionally rare, R5. Contributed by Carpediem Numismatics, April 2017.