Marcus Aurelius, AR denarius, Rome. Struck AD 178. 

M ANTONINVS AVG, laureate head right.
COS III P P, Salus seated left, holding branch; coiled serpent with head right at foot left.

RIC 425 var (bust type); RSC 152b. 

With permission of Numismatik Naumann auction 140, Lot 593, May 2024.