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<p>[QUOTE=&quot;alurid, post: 3296978, member: 81991&quot;]Machine Doubling does seem to be a go-to answer for this type of Doubling. </p><p>The thing is there is three other types of Doubling under the Heading of MD.</p><p>If people want to find up which one they may have, The research is their business.</p><p>And considering that none of them add any value to they coins nobody really goes that far with it. Or they do not read the links that are posted.</p><p><a href="http://www.error-ref.com/machine-doubling/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.error-ref.com/machine-doubling/" rel="nofollow">http://www.error-ref.com/machine-doubling/</a>[/QUOTE]</p><p><br /></p>

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