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<p>[QUOTE=&quot;GDJMSP, post: 20866751, member: 112&quot;]That&#039;s probably the most commonly held theory. And it&#039;s not just ASEs, the problem occurs on coins from mints worldwide. And they don&#039;t all use the same planchet rinses.</p><p><br /></p><p>But there is a problem with that theory. If the milk spots were caused by residues left on the planchet, they could easily be removed by properly dipping the coin. But, dipping does not remove milk spots. That&#039;s because dipping can only remove things on the surface of a coin. And since dipping does not remove them, that means the milk spots are not on the surface of the coin, as residues would be. They are within the metal itself.</p><p><br /></p><p>To date, nobody has ever found anything that can safely remove milk spots. For many years PCGS offered a $25,000 reward to anyone who could come up with a way to safely and successfully remove milk spots. Nobody has ever claimed that reward.</p><p><br /></p><p><br /></p><p><br /></p><p>&nbsp;I agree that can happen and as you say they are not the same. And spots caused by water vapor can easily and safely be removed by dipping the coin.[/QUOTE]</p><p><br /></p>

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