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<p>[QUOTE=&quot;coop, post: 2161884, member: 17656&quot;]Machine doubled (actually damage to the devices) come from a normal die. The movement during the strike damages the devices reducing them in size. On a true hub doubled die, the doubling is on the hub and each strike will show the same doubling (minus die wear) on each strike. Machine doubling can vary from strike to strike. It is easy to find machine MD examples, but a lot harder to find a true doubled die. The devices are reduced on a MD coin. But the devices are enlarged on a hub doubled coin because it is on the die. (thus the term doubled die)</p><p><img src="http://imgs.inkfrog.com/pix/coop49/---MD_REDUCES_-_HUB_INCREASES_1.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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