Helena, AE3, 325-326, Nicomedia, Officina 6
FL HELENA-AVGVSTA Pearl-diademed, mantled bust right, wearing pearl necklace, Magnia Urbica fashion hair style, diadem as broad band decorated with a single string of pearls SECVRITAS-REIPVBLICE Securitas standing facing, head left, branch downward in right hand, raising robe with left MNS in exergue 18mm x 19mm, 2.90g