List of Gold Maker Marks | Marks Poincons Of The Chief Sword Cutlers 150 | Antique knowledge, Costume jewelry makers, Pottery marks
Vintage Costume Jewelry: Where to Begin | Barnebys Magazine
Hallmarks and History of Vintage, Contemporary, Modernist and European Costume Jewelry Designers- Research and Information Page: Amazing Adornments.com
How to Identify Unmarked Costume Jewelry - Antique Trader
Do You Have a Vintage or Antique Costume Jewelry Question?
Vintage Costume Jewelry Designer Marks Examples
3 tips to determine value of costume jewelry
Jewelry Maker's Mark | Antique Jewelry University
Costume jewelry makers tag Help.. - The eBay Community
Does anyone recognize this maker's mark? It's on the back of a vintage brooch. | Collectors Weekly