Helena, AE follis. Cyzicus, AD 324-325.

FL HELENA-AVGVSTA, draped bust right with double-row 
pearl diadem, and necklace.
SECVRITAS-REIPVBLICE, Securitas standing left holding branch and hem of robe.	
Mintmark SMKB.
RIC VII Cyzicus 28; Sear 16623.
Rare, rated R3.

AAH sale on ebay, 2003.