A George III Irish silver drum mustard pot by Joseph Jackson, Dublin 1793, with a scroll handle, engraved with decorative bands and a crest within a shield shaped reserve, 9cm (3 1/2in) long, with a blue glass liner; and a George IV drum mustard pot by Charles Fox II, London 1828, with a shell shaped thumb piece to the flat cover, the cover engraved with a crest (worn), a harp handle and reeded borders, 9cm (3 1/2in) long, with a blue glass liner, 220g (7.1 oz) gross Provenance: The Cairns family, Ireland; thence to Simon Dallas Cairns, 6th Earl Cairns.