Watch List notes:

Helena (mother of Constantine I) BI Nummus. Thessalonica, AD 326-328. FL HELENA AVGVSTA, diademed and mantled bust to right / SECVRITAS REIPVBLICE, Securitas standing to left, holding branch and raising robe; SMTSΓ in exergue. RIC VII 159. 3.35g, 19mm, 11h.

Extremely Fine.

From the collection of a Romanophile;
Acquired from Stack's Bowers Galleries (& Ponterio).