Antoninus Pius AE Sestertius. 156-157 AD. 

ANTONINVS AVG PIVS P P IMP II, laureate head right, slight 
drapery on far shoulder 
TR POT XX COS IIII S-C, Annona standing right, left foot on 
prow, holding rudder & balancing modius on knee. 

RIC 964; Cohen 1017; Sear 4251

Contributed by Guido Courtois.