Marcus Aurelius as Caesar (139-161). AR Denarius, 151-152 AD. Obv. AVRELIVS CAESAR AVG PII FIL. Bare head right. Rev. TR POT VI COS II. The Genius Exercitus standing left, sacrificing out of patera over altar and holding legionary eagle. RIC (Ant. Pius) 453 a. C. 645. AR. g. 3.19 mm. 18.50 R. Rare and superb. Magnificent black patina. About EF.