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<p>[QUOTE=&quot;USCoinCollector42, post: 3160846, member: 75732&quot;]I definitely see what you&#039;re talking about at the eagle in some of those close-up pictures, but I&#039;m afraid that this is only machine doubling.</p><p><br /></p><p>Machine doubling occurs during the striking process when dies wobble slightly, causing shelf-like doubling in some devices of a coin. This is very common and occurs on all denominations of US coins. These coins have no additional value and they are generally not considered mint errors by collectors.</p><p><br /></p><p>When people use the terms DDO, DDR, doubled die, etc., they are referring to hub doubling. Hub doubling occurs when dies are created and is imprinted in a die, thus showing on all coins struck by that die throughout its lifetime.</p><p><br /></p><p>Here is a good illustration of the difference between machine and hub doubling.</p><p>[ATTACH=full]811264[/ATTACH]</p><p>The coin on top has machine doubling.</p><p>The coin on bottom is a true doubled die coin.[/QUOTE]</p><p><br /></p>

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