Antoninus Pius with Marcus Aurelius as Caesar (139-161). AR Denarius. Struck 140-144 AD. Obv. ANTONINVS AVG PIVS P P TR P COS III. Laureate head of Antoninus Pius right. Rev. AVRELIVS CAESAR AVG PII F COS. Bare head of Marcus Aurelius. RIC III 417a; C. 15. 3.23 g. 18.00 mm. Scarce. Superb example, well centred and nicely toned. EF/About EF.