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<p>[QUOTE=&quot;Kasia, post: 1300247, member: 31533&quot;]Two points: 1) That&#039;s not my question. And 2) The fact is I don&#039;t believe that &quot;its pretty clear that the coins won&#039;t be visibly different after a few months&quot;. </p><p><br /></p><p>To me it doesn&#039;t matter when discussing the effects of light on coins whether the time frame is able to be clarified to any particular time in days, months, or years. The fact is that when a circumstance like light, or any other environmental condition having a cumulative effect on something, their generally is no &quot;visible&quot; point where one can say that&#039;s enough, I won&#039;t go farther because if I do, then there is irreparable harm. The harm is already there, it&#039;s just you don&#039;t know where the tipping point is. That is the crux of the matter as far as I am concerned. Whether the coins you place at the window will turn a month or a year or ten years on is not really any point of this at all. The coin has been damaged, even if you can not &quot;visibly&quot; see it. It may only be damaged to the point that any other condition you place on it that is harmful may act faster on it to corrode it than it would have if it had not been in the light. In other words, it is &quot;hidden damage&quot;.</p><p><br /></p><p>Also, you were asking for other person&#039;s opinions on this and I gave you mine, and I backed mine up with scientific data to support what I was saying. I never intended to be able to give you an exact timeframe when you could tell (assuming you put your coins in light for display) when it would be &quot;apparent&quot; (i.e., visible to the human eye, whatever that is, based on a person&#039;s eyesight and ability to differentiate between what it was before and what it is now, after time has passed) that there was a change. </p><p><br /></p><p>I basically tried to leave it that it really is up to you as a collector/enjoyer of coins whether you want to do that to your coins.</p><p><br /></p><p>You posted:</p><p>I answered that. And my answer was yes, it would. You are the one who will have to ask yourself if, based on the information you have, whether you want to display your coins in light. Only you can answer that question. And if you want to know more, then you should search out the information yourself.[/QUOTE]</p><p><br /></p>

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