A fine antique English sterling silver rock crystal glass mustard/jam jar by Charles Fox, London, 1828. It is  5 1/2 inches tall and weights 499 grams. The silver is fully marked with head of George, lion for sterling silver, head of lion for London, a letter m for 1827 and a maker mark CF for Charles Fox. The jar is in extraordinary condition for its age with only few flee bites on crystal and an old patina. Please, see our matching sugar shaker for auction.