Watch List notes:

Helena. Augusta, AD 324-328/30. Æ Follis (20mm, 3.57 g, 12h). Antioch mint, 10th officina. Struck AD 325-326. Diademed and draped bust right / Securitas standing left, holding olive branch in extended right hand; ΔЄ//SMANT. RIC VII 67; LRBC 1341. Black patina with traces of porosity. EF. An unusual and rare representation for the 10th officina is used here, with ΔЄ being the abbreviation for dekatov or ten in Greek.

Ex Classical Numismatic Group Electronic Auction 230 (24 March 2010), lot 463.