Watch List notes:

Antoninus Pius; 138-161 AD, Rome, 149-50 AD, Denarius, 3.50g. Strack-193 (3 spec. with bust l.). pl. II (same obv. die); bust var. of BM-668, RIC-179, and C-263. Obv: ANTONINVS AVG - PIVS P P TR P XII Bust laureate l., with Medusa head and aegis on front shoulder. Rx: C - OS - IIII Fortuna standing l. holding rudder and cornucopia. Ex Curtis L. Clay Collection. Very rare bust type, facing left and with aegis on front shoulder; all attested specimens probably come from this single obverse die. Our coin also omits the globe that is usually shown beneath Fortuna's rudder. . EF (300)