A pair of George III silver wine coasters

A pair of George III silver wine coasters, maker's mark possibly that of William Burwash, London 1814, circular form, part-fluted decoration, shell and gadroon border, the silver centres engraved with an armorial, diameter 16.5cm. (2) The arms are those of Dickinson quartering Fuller impaling Smith for the marriage (19 July 1803) of William Dickenson (1771-1837) of Kingsweston, MP for Somerset (1807-1831) to Sophia Smith of Woodhall Park, Hertfordshire, niece of 1st Lord Carrington.