Helena's rare follis, rarity index in RIC - R4.
Roman Imperial
Helena Augusta (325-329, mother of Constantine), Follis 325-326, Antioch mint
Obverse: diademed and draped bust right
FL HELENA AVGVSTA
Reverse: Securitas standing left, lowering branch with left hand, raising robe with right hand, SMANTS in exerque
SECVRITAS REIPVBLICE
Diameter 20 mm, weight 2.98 g