Watch List notes:

Marcus Aurelius. As Caesar, AD 139-161. Æ As (25mm, 13.32 g, 11h). Rome mint. Struck under Antoninus Pius, AD 155-156. AVRELIVS CAES ANTON AVG [PII F], bare head right / [TR] POT X CO[S II] S C, Minerva standing facing, head left, holding owl and spear; shield at side. Unpublished in the standard references for an as, but for sestertii of the same type see: RIC III 1325a; BMCRE 2004. VF, dark green patina with patches of brown, smoothing.