Helena, AE follis, Antioch, AD 307-337. 

FL HELENA AVGVSTA, pearl-diademed, mantled bust right, wearing necklace, hair in a crest. 
SECVRITAS REIPVBLICE, Securitas standing left, holding 
branch pointing down, raising robe with right hand.

Mintmark SMANTZ. 

RIC VII Antioch 67.
With permission of Numismatik Lanz, auction 102, 2001.