Maxentius Follis / Mars. Item # 1253206559 $135.00 Jul-09-01 Maxentius. AE Follis. 308-310 AD. Rome. IMP C MAXENTIVS P F AVG, laureate head right. MARTI CO-M-ITI AVG N, Mars advancing right, cloak flying out behind, holding transverse spear and shield. Kneeling or seated, bound captive to right. Mintmark RBT. RIC VI Rome 220 var (captive); Failmezger 137. Very Rare (R4) Note: The coin was purchased by V. Failmezger and was used as the plate coin in his book, hence the co-reference of Failmezger 137.