Helena, mother of Constantine I (Augusta 324-330). AE Follis, 325-326, Alexandria mint. D/ FL HELENA AVGVSTA. Diademed and mantled bust right, with necklace. R/ SECVRITAS REI PVBLICAE. Securitas standing facing, head left, lowering branch and raising robe with right hand; in exergue, SMALB. RIC 38. AE. g. 2.61 mm. 20.00 RR. EF.