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<p>[QUOTE=&quot;Collecting Nut, post: 4851389, member: 74863&quot;]To answer your question:</p><p><br /></p><p>Machine Dublin also known as MD or mechanical doubling, shift doubling, or shift doubling is not caused by the die itself. Machine doubling is created when the die shifts slightly as a coin is being struck. Machine doubling is the result of loose mechanical parts that caused a poor die strike. These are very common and the coin is only worth face value.[/QUOTE]</p><p><br /></p>

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