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<p>[QUOTE=&quot;BUncirculated, post: 1539242, member: 29581&quot;]It should be MD for mechanical doubling as that is what it truly is. </p><p><br /></p><p>Considering what causes mechanical doubling, also called machine and strike doubling, is a mechanical issue during the striking of the coin. A loose collar or die, the coin shifting during striking, the die being jarred out of position from vibration of the press, or improper machine maintenance, is mechanical and causes MD.[/QUOTE]</p><p><br /></p>

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