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All Forums Category: Canadian Coins and Currency Forums Forum: Canadian Variety and Error Coins

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Montgomery
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Canada
429 Posts
 Posted 01/11/2016  3:56 pm Show Profile   Bookmark this topic Add Montgomery to your friends list Get a Link to this Message Number of Subscribers
Some tiny green spots start around few letters on a 1911 large cent with wood finish. What can I do to stop and removed thoses tiny green spots? The coin is EF.

Thanks!
ace_ftw
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Canada
1747 Posts
 Posted 01/11/2016  4:03 pm  Show Profile   Bookmark this reply Add ace_ftw to your friends list Get a Link to this Reply
This is called Verdigris, first you need to conserve the coin using an acetone bath, or Verdi-care (please search for proper techniques), but secondly, you need to address the storage of the coin(s) verdigris is a moisture issue. You need to include desiccant in your storage area to absorb this unwanted moisture.
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Numisma
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United States
4963 Posts
 Posted 01/11/2016  10:13 pm  Show Profile   Bookmark this reply Add Numisma to your friends list Get a Link to this Reply
It could also be PVC damage, which is caused (despite its name) by the plasticizers in plastics. If it's stored in a soft flip or other soft plastic holder, that could be the culprit.
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All Forums Category: Canadian Coins and Currency Forums Forum: Canadian Variety and Error Coins



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