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<p>[QUOTE=&quot;Badger Mint, post: 2253557, member: 42121&quot;]OK, just a few more lumps to stir into the pot.&nbsp; I have done some SG tests over the years and one thing I learned was that distilled water and temperature control are a must for consistent results, along with the high quality scale.&nbsp; One other thing, have you tried comparing just the weights of the coins that came up with the wrong values with their required weights?&nbsp; I just looked up the U.S. half dollar as an example.&nbsp; A 90% silver piece weighs 12.5 grams (+-.25) and a 40% silver weighs 11.5 (+-.4).&nbsp; If your tests show a large variance in the SG of a coin, then there would be an equal difference in the weight since their volume should be consistent.&nbsp; Thoughts?</p><p><br /></p><p>Joe Paonessa[/QUOTE]</p><p><br /></p>

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