A small collection of three 19th century silver vinaigrettes

A small collection of three 19th century silver vinaigrettes,

comprising: one by Cocks and Bettridge, Birmingham no date letter, oblong form, engraved borders, the interior with a gilded pierced grille, plus a silver-gilt one, Birmingham 1821, grille hinge a.f, engraved decoration, and a small one by Hilliard and Thomason, Birmingham 1876, approx. weight 1.2oz. (3)