Watch List notes:

Antoninus Pius (138-161). AE As, 154-155 AD. Obv. ANTONINVS AVG PIVS PP TR P XVIII. Laureate head right. Rev. BRITANNIA COS IIII SC. Britannia seated left on rock, head propped on right hand; to left, shield and eagle-tipped sceptre. RIC 934. C. 117. AE. g. 10.04 mm. 25.00 Rare and historically important. Dark green patina. Light scuff on reverse edge, at seven o'clock, otherwise good VF.