Antoninus Pius AR denarius. AR 18.32, 2.94 gr.

Obv. ANTONINVS AVG PIVS PP, laureate head right.
Rev. COS IIII, Salus standing left, holding patera to feed serpent 
coiled around altar at foot left. 

RIC -; Sear -; RSC -; Cohen -; BMC -. RIC 166 var (with legend 
ending TR P XI on obverse); RIC 224 var (with legend ending TR P XVI 
on obverse); RIC 303 var (different, longer obverse and reverse 
legends). With these obverse and reverse legends, this coin belongs 
in the group between RIC 127 and RIC 137.

Courtesy of TimeLine Originals (www.time-lines.co.uk), June, 2011