Marcus Aurelius as Caesar under Antoninus Pius, AE Sestertius. AD 148-149, 32mm, 19.82g. 

AVRELIVS CAESAR AVG PII F, bare-headed, draped bust right. 
TR POT III COS II, Pietas standing left, holding sceptre and 
extending right hand over child standing to left. 

RIC 1281b (Pius); Cohen 448. 

With permission of Numismatica Ars Classica auction 72, Lot 1610, May 2013.