Watch List notes:

Helena, mother of Constantine I. AE 20 mm. Treveri mint, tc.337-340 AD. Obv. Diademed and draped bust right. Rev. Pax standing facing, head right, holding branch and sceptre;°TRS° in exergue. RIC VIII 63. AE. 1.64 g. 20.00 mm. Nice reddish surfaces. Good VF.