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The danger of staples in 2X2s
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<p>[QUOTE="Publius2, post: 5175854, member: 105571"]Yes, I use these for RB and Red copper and proof silver coins. The manufacturer says they are safe and I see no reason to doubt that. The adhesive should do a good job of sealing the coin from the atmosphere and its moisture, which is the major contributor to copper changing color while in the possession of a collector.</p><p><br /></p><p>The only thing I think you have to be careful about is the cardboard of these adhesive 2x2's is thinner than that of the standard, staple-closed type. As a result of being thinner the surfaces of the coin stand more proud of the carboard surface and are thus more susceptible to damage from stacking, sliding, and jostling even if the clear enclosure is not breached. There are multiple ways to prevent or mitigate the exposure that are too numerous to state here simply because how you deal with it is the result of how you are storing your coins.[/QUOTE]</p><p><br /></p>
[QUOTE="Publius2, post: 5175854, member: 105571"]Yes, I use these for RB and Red copper and proof silver coins. The manufacturer says they are safe and I see no reason to doubt that. The adhesive should do a good job of sealing the coin from the atmosphere and its moisture, which is the major contributor to copper changing color while in the possession of a collector. The only thing I think you have to be careful about is the cardboard of these adhesive 2x2's is thinner than that of the standard, staple-closed type. As a result of being thinner the surfaces of the coin stand more proud of the carboard surface and are thus more susceptible to damage from stacking, sliding, and jostling even if the clear enclosure is not breached. There are multiple ways to prevent or mitigate the exposure that are too numerous to state here simply because how you deal with it is the result of how you are storing your coins.[/QUOTE]
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