Watch List notes:

Antoninus Pius (138-161), Sestertius, Rome, AD 150-151; AE (g 24,87; mm 34; h 6); IMP CAES T AEL HADR ANTONINVS AVG PIVS P P, laureate head r., Rv. TR POT XIIII - [COS] IIII, Roma seated l., holding spear and resting on shield; in field, S - C; in ex. ROMA. RIC 874; C 690.
Rare, expressive portrait, dark green patina, about extremely fine.