Silver denarius of Marcus Aurelius as Caesar under Antoninus Pius. Obverse: AVRELIVS CAESAR AVG PII F; bare head right. Reverse: TR POT XIIII COS II D(E) SIG III; Mars standing facing, head left, resting on spear and shield. Minted in Rome, AD 161. Roman Imperial Coinage, volume III, page 91, number 486.