ABOUT 1770 THOMAS BOULSOVER BEGAN PRODUCING "SHEFFIELD PLATE," emulating sterling silver using a less expensive variation with a copper core between two sheets of silver. His revolutionary process made a vast range of dining wares available to an upwardly mobile society, creating the spectacular sideboards and dining tables for which 19th-century British country houses were known. This impressive ice bucket will be a conversation piece at your cocktail party, just as the tea urn that inspired it (now in the Colonial Williamsburg collections) was the pride of a Regency hostess's table.