Watch List notes:

Marcus Aurelius (161-180 AD). AE Sestertius (13,9 g, 26,9 mm), (Rome), 162/263 AD.. Obv. IMP CAES M AVREL ANTONINVS AVG P M, Laureate head right.
Rev. SALVTI AVGVSTOR TR P XVII / S-C, Salus standing left, feeding snake twined round altar; COS III in exergue.
RIC III, p. 280, 843; C. 564.