Antoninus Pius AE Sestertius. 143-144 AD. 

ANTONINVS AVG PIVS P P TR P COS III, laureate head right
IMPERATOR II, S-C across fields, BRITANNIA in ex, Britannia 
seated left on pile of rocks, holding military standard in 
right hand and spear in left arm, leaning on round shield set 
on rock. 

RIC 745; Cohen 119.

with permission of cngcoins.com, 2007.