Watch List notes:

Helena, Augusta, 324-328/30. Follis (Bronze, 19 mm, 3.24 g, 6 h), mother of Constantine I, Thessalonica, Γ = 3rd officina, 326-328. FL HELENA AVGVSTA Draped bust of Helena to right, wearing stephane. Rev. SECVRITAS REI PVBLICE / SMTSΓ Securitas standing left, holding olive branch in her right hand and fold of drapery with her left. LRBC 823. RIC 159. Significant silvering remaining. Good very fine.

From the Berliner collection, formed between 1970s and early 2000s.