Antique enamel enamelled top blue overlay sterling silver perfume scent bottle

A beautiful antique perfume bottle with overlay blue on white in a torpedo shape with a sterling silver enamelled screw top with a sprinkler stopper to the inside with the original blue silk tassel. The inside is marked to the rim Metal, the top is not marked but has been professionally assay tested as sterling silver. In very good to all original condition.  Measuring 8.5 cm long approx