Watch List notes:

Antoninus Pius (138-161), Sestertius, Rome, AD 145-161; AE (g 21,76; mm 30; h 12); ANTONINVS AVG PI - VS P P TR P COS IIII, laureate head r., Rv. Securitas seated l., holding sceptre and propping head on hand; in field, S - C. RIC 782; C 757.
Beautiful green patina, extremely fine.