Watch List notes:

Antoninus Pius and Marcus Aurelius Caesar. AR Denarius, 140 AD. D/ ANTONINVS AVG PIVS PP TR P COS III. Laureate head of Antoninus Pius right. R/ AVRELIVS CAESAR AVG PII F COS. Bare-headed and cuirassed bust of Marcus Aurelius right, seen from behind. Cf. RIC 421 var. (M. Aurel. dr. and cuir.). AR. g. 3.42 mm. 19.00 R. A superb example of this very rare variety. Lovely old cabinet tone. EF.