Bronze, 2.32 grams, 19.52 mm. Siscia. 321 AD. Obverse: CONSTAN-TINVS AVG, laureate head right. Reverse: CONSTANTINI AVGVSTI, VO-TIS-XX in three lines, mintmark dot ASIS dot below. RIC VII Siscia 140; Sear -. Extremely rare (R3). Very fine. A significant coin which has been published on wildwinds.com