Watch List notes:

Antoninus Pius (138-161), Sestertius, Rome, AD 139; AE (g 23,66; mm 32; h 6); ANTONINVS - AVG PIVS P P, laureate head r., Rv. COS - II, Asia, towered, standing l., holding crown and anchor; at feet, prow; in field, S - C; in ex. [ASIA]. RIC 579; C 64.
Very rare, glossy green patina, good very fine.