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Message:: [QUOTE="GDJMSP, post: 1413847, member: 112"]Actually Chris there was a time when some people did wrap the coins, not the paper rolls the coins themselves, in aluminum foil, and then insert that into a paper roll, to prevent the coins from toning. And yes these were copper coins. And yes it worked. Quite a few years ago it was even posted about on this forum by a member who is no longer with us - Catman. His name was Steve, a good personal friend of mine. And he did that exact experiment with rolls of cents that lasted for decades. He rolled them up back in the '60s, opened those rolls after 2000. And the coins were pristine. Now that said - DO NOT roll your copper coins up in aluminum foil to store them. Chris is right. Copper and aluminum do not mix. When the two touch each other, and moisture is present (and that can even be moisture from humidity in the air), an electrical current is created that will severely corrode the coins. You see Steve was lucky, he knew all of this. But he also knew that if he could keep those rolls from being exposed to any moisture that the experiment should work. And he was right, it did. But then Steve also lived in Nevada, the driest state in the country. So just because it worked for him, that does not mean that it will work for you. DON'T DO IT ![/QUOTE]