A vintage coral set hinged bangle - probably Dutch

A vintage coral set hinged bangle - probably Dutch, designed as a continuous line of 4mm coral beads threaded on a wire and mounted on the hinged bangle, the two ends crossing over at the front to incorporate a central flowerhead feature of seven larger bouton coral beads (one replaced); discrete hinge and push clasp, integral safety chain; yellow metal with cartouche stamped '800' and surface tests for gold, suggesting silver gilt of Dutch origin; internal width 5.7cm