Watch List notes:

Antoninus Pius. AD 138-161. Æ Sestertius (31mm, 20.81 g, 5h). Rome mint. Struck AD 151. Laureate head right / Roma seated left, holding spear and resting left elbow on shield set on prow. RIC III 874; Banti 328. VF, dark gray-brown patina, some smoothing and tooling, minor porosity. Rare reverse type.