Watch List notes:

Antoninus Pius (138-161), Dupondius, Rome, AD 145-161; AE (g 13,21; mm 30; h 12); ANTONINVS AVG - PIVS P P TR P COS IIII, radiate head r., Rv. Securitas seated l., holding sceptre and propping head on l. hand; in field, S - C. RIC 808; C 758.
Green patina, large flan, good very fine.