Roman Imperial Coinage, Antoninus Pius (138-161), As, 154-5, Rome, laureate head right, rev. Britannia seated left on rock, resting head upon hand, shield and sceptre behind, 10.55g/5h (RIC 934; C 117; Sear 4296). Dark tone, fine or better, scarce (£50-70)

According to RIC, Britannia is in an attitude of sorrow caused by the sadness brought to the land by rebelling against Rome