Watch List notes:

Antoninus Pius Æ As. Rome (or mint in Britain?), AD 154-155. ANTONINVS AVG PIVS P P TR P XVIII, laureate head right / BRITANNIA COS IIII, Britannia seated left on rock, resting her head on her right hand, and resting her left on rock, round shield and vexillum in background. RIC 934; C 117; RCV 4296. 9.22g, 25mm, 11h.

Good Very Fine.