A pair of George III silver-gilt swing-handled sugar baskets

A pair of George III silver-gilt swing-handled sugar baskets, maker's mark only, that of William Plummer, London circa 1770, circular form, embossed and pierced with foliate scroll, garlands and medallions, pierced scroll and foliate handle, on a raised circular foot, gadroon borders, diameter 14cm, approx. weight 24oz. (2)