Watch List notes:

Antoninus Pius; 138-161 AD, Rome, 155 AD, As, 12.18g. BM-1971, C-117 (10 Fr.), RIC-934, Sear-4296. Obv: ANTON[INVS AVG] - PIVS P P TR P XVIII Head laureate r. Rx: BRITANNIA - COS IIII S C Britannia seated l. on rocks, r. foot drawn in and knee raised, supporting head with r. hand, l. hand reaching to rocks behind her, behind her legs large shield and vexillum. Purchased from CNG, April 1999. This type was apparently struck in Britain, from official dies cut by engravers of the mint of Rome, for it is found in abundance there but almost never turns up in Gaul or elsewhere in the former Roman empire. . aVF (675)