Fausta AE Follis, 325-326 AD. 

Obv: FLAV MAX-FAVSTA AVG, mantled bust right, head bare, waved hair.
Rev: SPES REI-PVBLICAE, Empress or Spes standing facing, 
looking left, head veiled, holding two children in her 
arms.
Mintmark: MNA

RIC VII Nicomedia 131, rated R4.

ebay sale, Sept. 2014.