Here's one from my collection that includes a Cross: Helena, Augusta. Billon reduced centenionalis. Mint: Treveri (Trier, Germany), ca. 340. Obv.: FL IVL HELENA AVGVSTA, diademed & mantled bust, r., pearl necklace. Rev.: PAX PVBLICA, Pax standing, l., r. hand holds an olive branch pointed downward, l. hand holds a long scepter, Cross in l. field, TRS in exergue. Diam.: 15 mm. Weight: 1.3 gr. Attrib.: RIC VIII Trier 42 (Scarce).