A set of four George III silver wine coasters

A set of four George III silver wine coasters, by William Plummer, London 1785, circular form, the sides pierced with vertical slats, beaded borders, wooden bases, the silver centres engraved with an armorial shield, with four Victorian tin liners, applied with a badge 'Edelsten and Co, London, Iron and Wire Workers, Window Blind and Bird Cage Makers', diameter 12.3cm. (4) The arms are those of Tunstall of Shropshire, originally granted in 1747.