Antoninus Pius, as Caesar, AE Sestertius. 138 AD. 

IMP T AELIVS CAESAR ANTONINVS, bare head right
TRIB POT COS S-C, PIETAS below, Pietas standing left, holding box 
of incense and raising hand above altar. 

RIC 1083 (Hadrian); BMC 1945; Cohen 604.

with permission of cngcoins.com, March 2006.