A Victorian silver engraved 'castle-top' vinaigrette

A Victorian silver engraved 'castle-top' vinaigrette, by Nathaniel Mills, Birmingham 1854, shaped oblong form, the hinged cover engraved with Scott's Memorial, the base with engraved foliate scroll decoration, the interior with a pierced foliate scroll grille, length 4.8cm, approx. weight 0.7oz.