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<p>[QUOTE=&quot;desertgem, post: 3385216, member: 15199&quot;]MD or machine doubling occurs after the die contacts the coin metal. If the die is even a fraction loose in the machine it can move as the strike occurs or as the die lifts up from the strike causing a MD. The Die is where the difference in naming and pricing is produced . Before 1996 or close, the dies were squeezed multiple time to produce a strong image, ( depending on what coin they were making, but usually 2 ) so if the die that is going to produce the actual coin, is right on image alignment wise, for the 2 squeezings, it should produce a coin with a single image&nbsp; . But if that single image die slips, slide, vibrates even a fraction of a mm, it can produce a MD doubling effect, but the worn old machine or tired worker&#039;s action&nbsp; produced it , and not the mint, so it is of very little or zero extra value.</p><p>&nbsp;&nbsp; &nbsp; If however , in the process of multiple squeeze die production the worker misaligned the 2 squeezes, there will be 2 overlapping images and that will then transfer to the coin. That is a mint error and a &quot;True&quot; DD or Doubled die coin and is much more valuable than a normal or MD one. </p><p><br /></p><p>Coins after that date are only squeezed once and then&nbsp; it gets..............odd to say the least...., and hundreds or thousands or more MD coins are spread around the world. Easy to find and the bane of the forum as too many people see $$ on the coins rather than the normal portrait.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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