Lucilla AE sestertius, 27.12g, AD 163-180. 

LVCILLA AVGVSTA, draped bust right.
CERES, S-C, Ceres, holding torch and corn-ears, seated 
right on cista mystica with a serpent emerging.

RIC 1728; Cohen 2.

With permission of Ira & Larry Goldberg Coins & Collectibles, 
April 2000