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<p>[QUOTE=&quot;Clawcoins, post: 3509473, member: 77814&quot;]No problem.&nbsp; We&#039;re all trying to &quot;teach&quot; people what to look for.&nbsp; I thought I posted this earlier but I don&#039;t see it ....</p><p><br /></p><p>There are various types of Doubling, some which are the ones that are worth money, but many not worth anything.</p><p><br /></p><p>First of all there are 3 primary methods that doubling occurs (simplified, hopefully):</p><p>(1)&nbsp; Machine made - When a part of the minting machine moves slightly.&nbsp; This can be the die, the stamping arm, etc .&nbsp; This is known as Mechanical Doubling, Ejection Doubling, Machine Doubling</p><p>(2)&nbsp; Die Usage Wear made (which of course the machine is holding) - When the die itself starts wearing.&nbsp; aka Die Deterioration Doubling.</p><p><br /></p><p>These first two methods create the “illusion” of doubling.&nbsp; But this is not the doubling that people relate to worth money.&nbsp; (1) and (2) can be one, or the other, or both as they are separate problems from each other.</p><p><br /></p><p>(3)&nbsp; Man made Mistake (and lack of high quality control) - When in the process of creating the hubs and die itself, there is movement or rotation thus creating doubling on the die itself.&nbsp; Which is then &quot;transferred&quot; when the coin is minted/stamped.&nbsp; This is the reason one must understand the entire process as it becomes more obvious when one knows this information.</p><p><br /></p><p>So we have</p><p>(1)&nbsp; Machine Made</p><p>(2)&nbsp; Die Usage Wear Made</p><p>(3)&nbsp; Man/Quality Made in Hub/Die making process</p><p><br /></p><p>Most collectors are after everything that is (3) Man Made, or made during the hub/die making process.</p><p><br /></p><p>The above 3 items totally exclude when the coin goes into circulation.&nbsp; Which then damage, etc can also make one think there&#039;s some form of DD.</p><p><br /></p><p>And then, with the &quot;real doubling&quot; there are 9 classes of it, in brief:</p><p>Class 1, Rotated</p><p>Class 2, Distorted Hub Doubling</p><p>Class 3, Design</p><p>Class 4, Offset Hub Doubling</p><p>Class 5, Pivoted</p><p>Class 6, Distended</p><p>Class 7, Modified</p><p>Class 8, Tilted</p><p>Class 9, Single Squeeze</p><p><br /></p><p>But there is a lot to learn about real Doubled Die ...</p><p><br /></p><p>edit: I should add .. (1) &amp; (2) are probably 99.5% or more of the time.[/QUOTE]</p><p><br /></p>

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