Watch List notes:

Antoninus Pius (138-161), Sestertius, Rome, AD 141-143; AE (g 24,92; mm 34; h 11); ANTONIVS AVG PI VS P P TR P COS III, laureate head of Antoninus Pius r., Rv. AVRELIVS CAESAR AVG PII F COS, bareheaded, draped and cuirassed bust of Marcus Aurelius r. RIC 1212.
Green patina, gently smoothed, good very fine - about extremely fine.