Commodus AD 177-192. Dupondius, 26; 11,95 g. AD 181-182. 

M COMMODVS ANTONINVS AVG, radiate head right.
SALVS AVG TR P [VII IMP IIII COS] III P P, S-C, Salus
standing left, holding vertical sceptre and patera, feeding 
serpent coiled round altar.

RIC 337; BMCRE IV p. 778, 484; Cohen 688.

With permission of cngcoins.com, the AK collection sale.