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<p>[QUOTE=&quot;cj415, post: 3295911, member: 30598&quot;]I&#039;ve bought a large group of raw coins and a few of them were in cardboard flips marked &quot;not real&quot; but a bunch were loose. I&#039;ve weighed them (my scale is accurate to 0.01g) and they fall into the proper range, but before I send any of them off to be graded, I wanted to do some additional tests.</p><p><br /></p><p>For instance, with the Lincoln cents, there are some key dates. The size is right, the weight is right, and they are non-magnetic. I want to do one final test before spending the money of grading.</p><p><br /></p><p>For the test, I am following one I say on YT. I&#039;ll weigh the coin, then zero my scale with a cup of water, then &quot;float&quot; the coin and calculate using that weight.</p><p><br /></p><p>I&#039;ve never done it before, so though I&#039;d ask here about the affect of water.[/QUOTE]</p><p><br /></p>

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