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Hello! I have a blue pyrite ring with which is marked "Sterling NN." The NN is inside of a 6 sided diamond shape, and I believe it could possibly be Niels Neilsen, but I am not sure. I have supplied a picture of both the ring and the hallmark as a reference. http://i1186.photobucket.com/al...

Hi all. I have a Mexican sterling silver hinged cuff bracelet. It has an "AM" hallmark, as well as a #1 Eagle Mark. I've researched this hallmark on this website, but cannot find a match. Many off the hallmarks listed under the Mexican Hallmarks section are very similar, but not identical....