Helena, mother of Constantinus I, (AD 324–328/30).
Follis (AE, 19 mm, 3.55 g), Siscia mint, AD 328–329.
FL HELENA AVGVSTA Bust of Helena, diademed, mantled, right, wearing necklace, seen from front / SECVRITAS REIPVBLICE Securitas, veiled, standing front, head left, holding branch in her right hand; / ЄSIS(crescent-in-crescent) in exergue.
RIC 218.
Dark green patina. Minor cleaning marks. Almost extremely fine.