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<p>[QUOTE=&quot;Clawcoins, post: 3133900, member: 77814&quot;]quote from</p><p><a href="https://www.thesprucecrafts.com/coin-mechanical-doubling-768461" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.thesprucecrafts.com/coin-mechanical-doubling-768461" rel="nofollow">https://www.thesprucecrafts.com/coin-mechanical-doubling-768461</a></p><p><br /></p><p>fyi, read the last paragraph over and over again.</p><p>= = = = =</p><p><font size="4"><b>Definition</b></font></p><p>Mechanical doubling, also called <i>machine doubling</i> or <i>strike doubling</i>, a form of doubling which appears on a coin and is easily confused with doubled die strikes. On <u><i><b>a true doubled die coin, the doubling comes from a mistake in the process used to make the coin die itself</b></i></u>. In mechanical, or machine doubling, the <b><i><u>doubled image results from mechanical issues during the striking of the coin, such as the coin shifting during striking</u></i></b>, or the die itself being jarred out of position as a result of vibration or improper coin press maintenance.</p><p><br /></p><p>Mechanical, machine, and strike doubling are all considered by purists to be forms of damage, and are therefore not collectible as an <a href="https://www.thesprucecrafts.com/mint-error-coin-768452" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.thesprucecrafts.com/mint-error-coin-768452" rel="nofollow">error coin</a>.</p><p><br /></p><p>See also: <a href="https://www.thesprucecrafts.com/doubled-die-coins-768451" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.thesprucecrafts.com/doubled-die-coins-768451" rel="nofollow">Doubled Dies</a> and Die Abrasion Doubling</p><p><br /></p><p><font size="4"><b>Examples</b></font></p><p>Most of the time, when novices think they have found a new type of doubled die, they&#039;ve actually found a coin exhibiting worthless mechanical doubling instead.[/QUOTE]</p><p><br /></p>

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