Helena. Augusta, AD 324-328/30. Æ Follis (20mm, 2.48 g, 6h). Thessalonica mint, 1st officina. Struck AD 326-328. Diademed and draped bust right / Securitas standing left, holding olive branch; SMTSA. RIC VII 159; LRBC 823. Near EF, dark green patina.