Watch List notes:

Antoninus Pius augustus, 138 – 161. Sestertius 145-161, Æ 24.99 g. ANTONINVS AVG – PIVS P P TR P Laureate head r. Rev. Antoninus in slow quadriga l. holding eagle-tipped sceptre; in exergue, COS IIII / S C. C 320. BMC 1669. RIC 767a.
Rare. A superb portrait and a finely detailed reverse composition.
Dark tone and good extremely fine