12 could indicate the purity of the metal is 12 carat gold which is 50% pure gold composition.
The letters "YB" are most likely the makers mark. Unlike standard metal stamps, this specific letter combination tracks back to the company, or jeweler that guaranteed the metal's purity.
Best Regards,
Yvonne
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12 YB stamp on a Gold Bracelet by: Yvonne
Hi Jennifer,
Thanks for writing in!
12 could indicate the purity of the metal is 12 carat gold which is 50% pure gold composition.
The letters "YB" are most likely the makers mark. Unlike standard metal stamps, this specific letter combination tracks back to the company, or jeweler that guaranteed the metal's purity.