I was recently told that keeping zinc uncirculated LMCs in their original white paper wrappers over time will create black spots on the coins--not just the outer, but the inner coins as well.
Is this true? Should I be storing them a better way to preserve their uncirculated luster? He mentioned using some "coin-friendly" plastic material but didn't mention specifically what that could be. I'd appreciate member's thoughts.
I had some rolls from the mid '80's that I opened 20 years later and did not notice any more spotting then if they were from circulation.There was some toning around the edges of all the coins though. John1
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