Watch List notes:

Marcus Aurelius (161-180), Sestertius, Rome, AD 166-167; AE (g 23,30; mm 32; h 11); M ANTONINVS AV[G] - ARM [PARTH MAX], laureate head r., Rv. [TR PO]T XXI IM - P IIII COS III, Victory advancing l., holding wreath and trophy; in field, S - C. RIC 948; C 815.
Green patina, about extremely fine / extremely fine.