Antoninus Pius (138-161). AV Aureus, 157-158 AD. Obv. ANTONINVS AVG – PIVS P P IMP II. Laureate and draped bust right. Rev. TR POT XXI – C – OS IIII. Salus standing right, feeding snake, held in her arms, out of patera. RIC III 279c; C. 1044; Calicó 1685. 7.32 g. 17.50 mm. R. Rare and superb. FDC.