Constantine I, AE follis, Rome. Mule with reverse of Constans. 321 AD. CONSTAN-TINVS AVG, laureate head right. CAESARVM NOSTRORVM around VOT X. Mintmark RT. RIC VII Rome 238 mule (obv. of Const. I with rev. of Constans). Rare. Contributed by ABL, Oct. 2013