Frank DeLizza’s book provides great detail about the items the company was manufacturing, with each chapter devoted to a specific time period of just a few years. Jewelry reflects the taste and attitude of every period in history. There are clues that can be used in deciphering how old your jewelry is. The older and rarer, the.Beginner's Guide to Dating Vintage
In the s, a new type of clasp using a hook and extender became popular for costume jewelry necklaces. Palm Royale Jewelry Advertisement from with matching Palm Royale jewelry The three key primary dating tools, patents and copyrights, books about specific companies, and period advertisements, can be used as an initial step when researching a particular piece of jewelry. The author is attempting to date pieces of this jewelry to specific decades. For this article, examples from the mid-twentieth century will be provided, though the techniques and tools described here could be used for dating jewelry from other periods. Prior to the early s, typical necklace clasp styles used by Coro and Trifari were spring ring, push also known as box , or fold-over.
Tools for Dating Vintage Costume JewelryAfter Trifari won a court case in for copyright infringement, patenting these types of designs was widely discontinued and replaced by the less-expensive process of design copyrighting. Other sources confirm dating this style of Florenza charm bracelets to circa s. Whether updating a collection, searching for information about a family heirloom, or assisting a colleague or customer, dating a piece of vintage costume jewelry can present a challenge. Trifari and Coro advertised extensively during the s, s and s, as did many other costume jewelry companies.
Referencing The Napier Co. It is known that they were in business and marking jewelry with the Florenza brand beginning in the early s until the company closed in February of When available, copyright information can be used in the same manner. Palm Royale Jewelry Advertisement from with matching Palm Royale jewelry The three key primary dating tools, patents and copyrights, books about specific companies, and period advertisements, can be used as an initial step when researching a particular piece of jewelry.