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<p>[QUOTE=&quot;Zeppelin78, post: 431764, member: 2764&quot;]Thanks again everyone for all the great comments. I tested it with a 22k gold acid and the acid didn’t react with the mark at all ,I tested many times in the same spot to make sure it’s under the plate if [ATTACH=full]151214[/ATTACH] there was any plating and still no reaction to 22k acid so my guess it’s either a900 mark or the 9999 mark again thanks to all. Matt[/QUOTE]</p><p><br /></p>

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