Watch List notes:

Marcus Aurelius. A.D. 161-180. AR denarius (18.52 mm, 3.45 g, 12 h). Rome mint, A.D. 171-172. M ANTONINVS AVG TR P XXVI, Laureate head of Marcus Aurelius right / IMP VI COS III, Mars standing right, holding spear and resting on shield. RIC 261; RSC 290. Near EF. 

From the Bill Porter Collection.