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<p>[QUOTE=&quot;GDJMSP, post: 3493921, member: 112&quot;]Contact or no contact makes little to no difference, at least in most respects. The reason I say that is because it is not contact that causes toning, it is the gasses released by the other objects - such as paper or cardboard, or in your case the cardboard and the matches - that causes the toning.</p><p><br /></p><p>Now I said most respects because contact can have an effect. For example, if you were to lay a coin flat on a piece of cardboard or paper, the side of the coin against the paper or cardboard would be exposed to less air and gasses than the side that faces up. Thus it may not tone as much as the side facing up because the contact is preventing the air from getting to the side of the coin in contact.</p><p><br /></p><p><br /></p><p><br /></p><p>This, at least the way you&#039;re doing it, is always a crap shoot because you have no controls in place. In other words you don&#039;t know if the specific gasses being put off by the cardboard and the matches will result in desirable toning or undesirable toning. Nor do you know what the individual coins were previously exposed to - and that always has a large bearing, often a very large bearing, on how toning turns out.</p><p><br /></p><p>With experiments such as the one you are conducting you could easily end up with some coins with no toning, others with desirable toning, and others with undesirable toning - and or any combination of the the three, or any single one of the three.</p><p><br /></p><p>This is the thing that a lot of people conducting toning experiments don&#039;t understand - there are more variables involved than you can count. So there&#039;s no way you can ever have any expectation of results - unless you control for ALL those variables. And yes, that can easily be done, in fact it is done on a daily basis. But it is done by those who know how to do that. And it results in coins that people fall all over themselves for and pay outrageous prices - never knowing, or even suspecting, that somebody made it happen. And did so in a matter of hours.[/QUOTE]</p><p><br /></p>

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