Four Norwegian silver-gilt wash and enamel tea strainers, David Andersen, marks for 1888-1925 a silver and blue cloisonne enamel tea strainer, scrolling wirework decoration, the borders enhanced by white enamel pellets, stamped to underside 925 and maker's mark for period 1888-1925; a parcel-gilt and deep green guilloche enamel tea strainer with white enamel pellet inner border, stamped 925 and makers mark for period 1888-1925; a silver gilt and cobalt blue cloisonne enamel tea strainer, decorated with scrolls and foliage motifs and white enamel borders, stamped 925; a silver gilt and cloisonne enamel tea strainer with scroll and foliate designs within ropework borders, stamped 'sterling and David-Andersen mark (4), 12 cm, 11.5 cm, 12 cm, 12.5 cm