Marcus Aurelius. Sestertius. 26.06g; 34mm. Rome. 145 AD. 

AVRELIVS CAESAR AVG PII F, bare head right

TR POT COS II S-C, Minerva standing right, holding spear 
and resting hand on shield. 

RIC 1248 (struck under Ant. Pius); Cohen 596.

With permission of Roma Numismatics, November, 2009