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I have a pair of vintage screw back earrings, signed on the back "S.O.B. 1/20 12K G.F.". According to "Researching Costume Jewelry" The company is S.O. Bigney Co. The dates they were in business 1896-1946. I cannot find any mention of screw back earr...

I have a pair of screw back earrings with faux pearls. On the back is a diamond shape with a mark inside the diamond shape. Anyone know what it might be? It is not a H. (At least not the Heisey H ) Thanks!

I have a pair of screw back earrings with a faux pearl and on the back is a diamond shape with a mark inside the diamond shape. Anyone know what it might be? It is not an H. Thanks!