Hi all -- I need your help understanding some of the tests of silver authenticity I'm seeing on YouTube. People let a little magnet slide down an...
On October 24th I received a message from eBay based of of a saved search request. The message informed me that an item just became available for...
This is not a commercial. Just a short clip. This is a video of gold analyzed with a hand held Niton XRF Analyzer Notice the Perth Mint gold bars,...
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