Dating antique jewelry
In an amazing coincidence, the jewelry and the vintage advertisement were found by the author within a three-month period, with the assistance of another CJCI member, Robin Deutsch.
Beginning in the 1930s up to the mid-to-late 1950s, Trifari and Coro patented hundreds of costume jewelry designs.
Also during this period, the company is producing necklace, bracelet, pin and earrings sets.
Ann Pitman’s was then reviewed, as it includes photos and years of production for many De Lizza and Elster designs.
The pieces that were copyrighted by the company were marked with “COPR” (an abbreviation of copyright, used in place of the better-known ©) and also the year as shown in the examples here.
Since Hollycraft was not a huge manufacturer like Coro or Trifari, and had a more defined style, this information is not of great use in identifying general styles of the decade.
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When available, copyright information can be used in the same manner.