Watch List notes:

Commodus. A.D. 177-192. Æ sestertius (30.21 g). Rome mint, Struck A.D. 187. M COMMODVS ANT P FELIX AVG BRIT, laureate head right / P M TR P XII IMP VIII COS V P P, SC, MON AVG, the three Monetae standing left, each holding scales and cornucopia. RIC 500; BMCRE 599. Ch EF. 

NGC certified and graded Ch XF; Strike 5/5, Surface 4/5.This is the first appearance, on coinage, of this popular reverse type. The three Monetae represent the three metals used in coin manufacture; gold, silver, and bronze.