Sestertius of Postumus (overstruck on Faustina II)

Obv.: Bust of Faustina, r., dr., on top of it struck a radiate crown and bust in profile, r., with slightly pointed beard; inscription reads FAVSTINA-[. .] POSTVMV[S] Rev.: Female figure, stg, holding palladium ? and shield, SC; on top stuck a galley and a circle of dots, no rev. inscription