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<p>[QUOTE=&quot;Clawcoins, post: 3377024, member: 77814&quot;]at one time I figured this out as i&#039;m sure it&#039;s not more than decorate gold plating/flash, which in itself is designated at .175 microns thick (that&#039;s 7 micro inches) up to .381 microns which is 0.000015 of an inch (15 millionths of an inch thick)</p><p><br /></p><p>I&#039;m assuming the thinner version was used.</p><p>which would be what ... around 3 milligrams for a quarter ??</p><p>since there are 1,000 milligrams in a gram,</p><p>and a gram of gold is about $42.50</p><p>shift the decimal place over 3 ... and you get virtually nothing.</p><p><br /></p><p>So to extract the gold from those it would cost more than the recovery costs.</p><p><br /></p><p>don&#039;t quote the numbers .. I just threw them together quickly but should be generally in the ballpark.</p><p><br /></p><p>edit: make a quick change to the above.&nbsp; a gold flash is normally 10k.&nbsp; So adjust the numbers for a 24k flash and you&#039;ll have a bit more money in your pocket.</p><p><br /></p><p>edit again: one place that does gold plate pennies showed this equation:&nbsp; A one mil thickness of 24K gold plate will weight 0.316 grams per square inch.&nbsp; The surface area of a US penny is ~0.88 square inches.&nbsp; Therefore - 20pennies * 0.88 in2/penny * 0.316 grams 24K gold/in2/mil thickness * 7mil thickness = 38.93 grams 24K gold for 20 pennies.&nbsp; Or 1.9465 gr per penny for a THICK gold plate.&nbsp; I&#039;m unsure if that is for hardened or softened gold, and since it&#039;s not jewelry I&#039;m sure they are probably a bit more stingy on the thickness.[/QUOTE]</p><p><br /></p>

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