Antoninus Pius, AE As, struck AD 154-155, perhaps in Britain. 12.75 g.

ANTONINVS AVG PIVS P P TR P XVIII, laureate head right.
BRITANNIA COS IIII around, SC in exergie, Britannia seated left on rocks, right foot drawn back and knee raised, supporting head with right hand, left hand on the rocks behind her, large shield and vexillum in the background. 

RIC 934; Cohen 117; Sear 4296; BMCRE 1971.

With permission of Dix Noonan Webb Ltd auction 146, Lot 27, April 2018.
ex CNG March 1997.