Helena (mother of Constantine the Great). Augusta, A.D. 324-330. Æ follis. 3.05 gm. 19 mm. Nicomedia mint. A.D. 325-326. Her diademed and draped bust right, with necklace; FL HELENA AVG]VSTA around / Securitas standing left, holding branch; SECURITAS REIPVBLICE around, NNΔ in exergue. RIC VII 129(r3). Good Extremely Fine; rich dark brown patina with traces of silvering. Rare.