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<p>[QUOTE=&quot;GDJMSP, post: 2130470, member: 112&quot;]Yeah, but isn&#039;t that what would be expected also ? I mean, nobody sits and watches coins non stop. When they buy a coin they may examine it in minute detail making note of everything there is to note. Same thing when a coin is graded by the TPGs. But then the coin is just put away (raw and/or slabbed), and probably not even looked at all for quite some time, maybe months. But when it is examined again, the spots are there.</p><p><br /></p><p>I used to buy rolls of ASE&#039;s. I&#039;ve watched the dealer take them right out of a freshly delivered &quot;green box&quot; and hand them to me. And when I examined the coins at home and put them in individual Air-Tites, sometimes none would have the spots. Other times a couple, or 5 or 10, would have the spots - right out of the mint roll. Yet other times there would be no spots visible, but 2 or 3 months later some of the coins would have spots.</p><p><br /></p><p>Now I agree that doesn&#039;t help solve the problem or provide any answers. Like you say, much of the needed information is missing. But I suspect just about everybody else&#039;s experience is rather similar to mine in regard to the time line of events. And the TPGs have undergone the same kind of thing. They have reported numerous times that when the coins were graded no spots were visible. But later, sometimes months later, the owner of the coin would return the now spotted coin to the TPG wanting then to honor their grade guarantee. And the TPG&#039;s have reported that they could not successfully remove the spots.</p><p><br /></p><p>Point is, it happens. And it happens just that way. And the fact that there is no rhyme or reason to it is at least part of what makes it so difficult to determine what the details of the events are. </p><p><br /></p><p>So short of taking coins with no spots and fresh from mint rolls, laying them out under a constantly running video camera, maybe for months, I know of no way to get the evidence you mention above. And I rather doubt that&#039;s ever gonna happen.</p><p><br /></p><p>But what about taking a coin that has milk spots. Then taking a sharp instrument and scraping the area with a spot into a container in a lab. Then taking that material and analyzing it. Would that provide any answers ? I would think it would, at least the chemical composition of the material. But would that help ?[/QUOTE]</p><p><br /></p>

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