Postumus Antoninianus / Mars Reverse $43.75 Oct-05-00 Postumus Antoninianus / Mars Reverse OBVERSE: IMP C POSTVMVS P F AVG. REVERSE: Mars walking r., P M TR P IIII COS III P P. DESCRIPTION : Not listed in RSC, varient of 273, this coin has IIII instead of the listed III in the first set. The coin has nice old cabinet toning, it is part of an old collection from France which I bought. Weight is 3.2 grams and size is 22mm. www.ancientimports.com