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<p>[QUOTE=&quot;-jeffB, post: 3925256, member: 27832&quot;]Specific gravity tests (measuring the coin&#039;s <i>density</i>, not its weight) are pretty hard to do accurately. You have to weigh the coin hanging in air, then hanging in water, with both measurements very precise.</p><p><br /></p><p>Even if you got a good specific-gravity measurement, I&#039;m not sure what we&#039;d do with it -- either it wouldn&#039;t match a normal war-nickel&#039;s specific gravity, in which case we don&#039;t know what your coin is made of, or it <i>would</i> match, but it&#039;s attracted to a magnet, so we <i>still</i> don&#039;t know what it&#039;s made of.[/QUOTE]</p><p><br /></p>

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