This 1871 book was compiled from the in-house notes of “one of the largest and most eminent Manufacturing Goldsmiths and Jewellers in this country” which had gone out of business, thus freeing Mr. Collins to reveal the companie’s secrets and experience. Much of the book is alloy recipes for all different purposes, such as enameling gold alloys, gold for making pens, gold and silver solders. There are sections on refining, on ‘coloring’ the gold (depletion gilding). There are 96 pages of alloying and trade secret information, and 36 pages of intriguing advertisements for books being published in 1872.
File Size: 3MB, 132 pages.