ANTONINUS PIUS with MARCUS AURELIUS AS CAESAR, A.D. 138-161. AV Aureus (7.01 gms), Rome Mint, A.D. 140-144. NGC VF, Strike: 5/5 Surface: 3/5. RIC-417E; Cal-1728. Obverse: Laureate head of Antoninus Pius right; Reverse: Bareheaded, draped, and cuirassed bust of Marcus Aurelius left. A fairly <strong>RARE</strong> type as an Aureus, this delightful, evenly circulated golden denomination presents a charming portrait of the current emperor as well as his son-in-law and successor.