Helena, mother of Constantine I (Augusta 324-330). AE 19 mm, Antioch mint, 327-329. Obv. FL HELENA - AVGVSTA. Bust right, wearing necklace and mantle. Rev. SECVRITAS - REIPVBLICE. Securitas, draped, standing left, raising robe with right hand and lowering branch with left hand. RIC VII Antioch 82. 3.25 g. 19.00 mm. Dark olive green patina. VF.