On the question of the production of jewellery from such engraved designs, it is interesting to note the several points of similarity that exist in the procedure of the ornamentists of the sixteenth century and that of the English furniture-designers of the eighteenth. In both cases the original producers of the designs were practical craftsmen, who certainly executed objects after their published patterns; while the patterns themselves were employed extensively as models. In both cases, too, it is quite evident that in a number of instances fanciful designs were produced which were never carried out. Hence one can readily understand the difficulties that are encountered in attempting to determine the provenance of such small and portable objects as personal jewels, the engraved designs for which were in like manner widely distributed. But there is the strong probability, after all, that the greater number of jewels, after engraved designs of German origin, were executed in, or not very far distant from the locality in which the designs originated. If designs are considered insufficient for the identification of jewels, there exists a means much more certain, and one which should surely prevent the attribution to Italians of jewels unquestionably the work of German craftsmen. It may be remembered that Cellini in his _Trattati_, in dealing with the goldsmith's art, advised jewellers to preserve castings in lead of their works in gold and silver. In many cases Cellini's recommendation has been literally carried out, and a considerable number of proofs struck by German jewellers of details of their jewels have fortunately come down to us. The Bavarian National Museum at Munich contains a highly important collection of these leaden casts, being a complete series used by a family of gold and silver workers in Augsburg for upwards of 250 years (from about 1550 to 1800). The jewellers of Augsburg were among the first in Europe, and these models of their productions, bearing strong traces of the influence of contemporary ornamentists, correspond in many details with original jewels dating from those times. Examples of these lead models for jewellery exist in other collections, such as the Historical Museum at Basle. Of the same material but of infinitely higher artistic importance, are the lead models by the hand of Peter Flötner of Nuremberg. In addition to engraved designs, Flötner executed models for goldsmiths, carved in stone and boxwood. From these--of which original examples have survived--casts (so-called plaquettes) were made in lead, which were used as patterns for craftsmen in the same manner as engravings of ornament. Flötner's models, though issued mainly for workers in gold and silver plate, were employed also by the jewellers, and exercised considerable influence on their productions.