Watch List notes:

Commodus. A.D. 177-192. AR denarius (18.2 mm, 2.76 g, 5 h). Rome mint, struck A.D. 192. L AEL AVREL COMM AVG P FEL, laureate head right / P M TR P XVII IMP VIII COS VII P P, Fides standing left, holding standard and cornucopia, star left. RIC 233; BMCRE 317; RSC 583a. aVF, scratches. 

The presence of the star on some coins issued late in Commodus' reign is referred to in BMC merely as a good omen, however Herodian records that a comet appeared at that time.