Four Norwegian silver gilt and enamel tea strainers, David-Andersen, marks for 1888-1925 a silver gilt and pink guilloche enamel tea strainer, the bowl with a border of white enamel pellets, stamped to reverse 925 S and maker's mark for period 1888-1925; a silver gilt and mid blue cloisonne scroll decorated enamel tea strainer with borders of white enamel pellets, stamped to reverse 925 S and maker's mark for period 1888-1925; a silver gilt and cloisonne tea strainer with polychrome enamel foliate decoration, stamped to reverse 'Norway' and makers mark for period 1888-1925 and a silver gilt and pale blue guilloche enamel tea strainer with white enamel pellet inner border, stamped to reverse 925 S (4), 14 cm, 12 cm, 12 cm, 14 cm long respectively