Antoninus Pius (138-161).     AE 18 mm. Nicaea mint (Bithynia).   Obv.    [ΑVΤ ΚΑΙСΑΡ] ΑΝΤΩΝΙΝOС. Laureate and cuirassed bust right.        Rev.   ΝΙΚΑΙEΩΝ. Serpent-entwined altar.     RPC online VI, 5497.1.     3.22 g.   18.00 mm.        Turquoise green patina.    Good F.