Roman Imperial
Helena Augusta (325-329, mother of Constantine), Follis circa 324-325, Cyzicus mint
Obverse: diademed, mantled bust right, wearing necklace
FL HELENA AVGVSTA
Reverse: Securitas standing left, lowering branch in right hand and raising hem of robe with left, SMKΔ in exerque
SECVRITAS REIPVBLICE
Weight 2.63 g