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<p>[QUOTE=&quot;GDJMSP, post: 2869680, member: 112&quot;]What you are talking about is a subject that comes up every now and then. And the questions asked, and the lack of understanding, are usually quite similar to yours. And for the most part it&#039;s all due to one simple thing - people don&#039;t realize that when coins are made there is an established tolerance range regarding their weight. That simple fact is something that you usually do not find in most books or articles written about coins, but ya do find it in a few of them.</p><p><br /></p><p>Now you posed a lot of questions, one was about how the weights are reported. For the most part that&#039;s simply a matter of choice made by the person doing the reporting - or due to their own lack of knowledge. But when it comes to the laws that dictated what the weights would be the laws were quite specific, and yes they often carried the weight out to 4 decimal places. And this was true even going back a thousand years or more. And yes, even a thousand years ago not only did they have the ability to control the weight to that extent they also had the ability to control the fineness of the metal to that extent as well. Most people simply aren&#039;t aware of that, but it is true.</p><p><br /></p><p>But even a thousand years ago they recognized the problems associated with trying to mint coins in large enough numbers to such exact numbers. So the even then the laws dictated tolerance levels, in both weight and fineness.</p><p><br /></p><p>So, where do you find these numbers ? For older world coins it can be quite difficult and it is only found in a few specialized books, and even then limited to a few specific coins. But for US coins it&#039;s quite easy, you need only purchase 1 book - Coin World Almanac.&nbsp; &nbsp; </p><p><br /></p><p><a href="https://www.abebooks.com/servlet/SearchResults?sortby=17&amp;tn=Coin%20world%20almanac" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.abebooks.com/servlet/SearchResults?sortby=17&amp;tn=Coin%20world%20almanac" rel="nofollow">https://www.abebooks.com/servlet/SearchResults?sortby=17&amp;tn=Coin world almanac</a></p><p><br /></p><p><a href="https://www.amazon.com/Coin-World-Almanac/dp/0944945600/ref=sr_1_3?ie=UTF8&amp;qid=1507042966&amp;sr=8-3&amp;keywords=coin+almanac" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.amazon.com/Coin-World-Almanac/dp/0944945600/ref=sr_1_3?ie=UTF8&amp;qid=1507042966&amp;sr=8-3&amp;keywords=coin+almanac" rel="nofollow">https://www.amazon.com/Coin-World-Almanac/dp/0944945600/ref=sr_1_3?ie=UTF8&amp;qid=1507042966&amp;sr=8-3&amp;keywords=coin+almanac</a></p><p><br /></p><p>That book will give you the specified weight, and the tolerance ranges for each US coin.</p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>If there is such a website I am unaware of its existence.[/QUOTE]</p><p><br /></p>

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