Helena, Augusta. 324-328/30 AD. AE Follis (2.56g, 19mm). Nicomedia mint. Struck 327-9 AD. Obv.: FL HELENA AVGVSTA, mantled, diademed bust with necklace right. Rev.: SECVRITAS REIPVBLICAE, Securitas standing left, lowering branch, raising robe with right hand; SMNΓ in exergue. RIC 95. VF.