I believe the the first coin to be:
RIC 385 Marcus Aurelius Denarius. 177-178 AD. M AVREL ANTONINVS AVG, laureate head right / TR P XXXII IMP VIIII COS III P P, Salus seated left, holding poppy over serpent at right.
RIC 385 Marcus Aurelius Denarius. 177-178 AD. M AVREL ANTONINVS AVG, laureate head right / TR P XXXII IMP VIIII COS III P P, Salus seated left, holding poppy over serpent at right.























