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<p>[QUOTE=&quot;red_spork, post: 3674515, member: 74282&quot;]Did you test your testing rig with a known good silver coin(preferably modern) as well to make sure everything was correct with your setup and methodology?</p><p><br /></p><p>Edit: I see now that you did. Somehow I originally missed that. Well done. I used the technique a year or two ago to verify that a coin was solid that I was writing a paper on. I&#039;ve been testing the SG of several of my coins lately for further research and think it is an excellent and often overlooked technique within the realm of Numismatics[/QUOTE]</p><p><br /></p>

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