ABOUT TRADEMARKS: It is well known that European and American silversmiths trademarked their wares, and these trademarks can be discovered and identified in the innumerable books available on the subject. However, authorship of early 1900 art metal goods has not been so easily determined. Through considerable research by this author, the major art metal manufacturers and the trademarks they used have been identified, and are pictured in The Jewel Box Book. But many jewel cases have no trademark, yet can we still know the manufacturer? How did trademarks come into being, anyway? Find the answers to these questions in THE JEWEL BOX BOOK.