It may seem strange that neither Bolsover nor Hancock followed the new industry for long. As astute business men, they might be expected to have anticipated the vogue that the copper rolled plate was later to enjoy. On the other hand, I think one should take into consideration the fact that the well-to-do of the day sought no silver substitutes, and that on the tables of the middle class such things as epergnes, bread-baskets, and cake-baskets were hardly to be found before 1750, while coffee-pots and milk-jugs were rare even in silver, and tea-kettles and tea-urns even more so. As these various articles came into more extended use in silver form, they suggested to the immediate followers of Bolsover and Hancock the greater commercial field that would open to their manufacture in copper rolled plate. Still the old Tudor & Leader firm, founded by Dr. Sherburn in 1758 and existing till 1814, a firm advertising “the best wrought silver plate,” devoted most of its attention to the making of buttons and snuff-boxes. Authorities generally assign to about 1760 the earliest table pieces, except those (and they were very few) which Hancock produced. After this time the copper rolled plate, the manufacture of which Bolsover and Hancock found less remunerative than the metal rolling business they entered, developed rapidly. By 1774 there were some sixteen firms engaged in the hollow-ware making in Sheffield alone, and Boulton had established a factory for copper rolled plate in Birmingham. We may assume that Sheffield plate, as the ware came to be called then, became widely popular, for Ashworth, Ellis, Wilson, and Hawksly opened branches away from Sheffield--in Paris and in Dublin. There were, of course, many improvements in Sheffield plate, such as the method of preparing for and applying the ornamental silver edges which was under the patents of Mr. Roberts of Roberts & Cadman in 1824.