Helena AE follis, Antioch.

Obv: FL HELENA-AVGVSTA, mantled bust right wearing necklace and ladder-shaped diadem with a pearl in each section .
Rev: SECVRITAS-REIPVBLICE, Securitas standing left, lowering branch with 
 left hand, raising robe with right hand. 

Mintmark: SMANTI. 
RIC VII Antioch 80.
Rare (rated R3).

Contributed by Roma Numismatics, July, 2014