Marcus Aurelius, as Caesar under Ant. Pius. Struck AD 156-157. 18 mm, 6.83 g. 

AVRELIVS CAES ANTON AVG PII F, bare head right.
TR POT XII COS II, Apollo standing left, holding patera
and lyre.

RIC 474a; Calico 1966; Sear - (4771 = different trib. year).

With permission of Roma Numismatics, March 2015
Estimate: £7500.