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Proof coins with fingerprints - how to remove

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Valued Member
Australia
464 Posts
 Posted 10/19/2009  7:35 pm Show Profile Bookmark this topic Add dibby33 to your friends list Get a Link to this Message

I just got a pile (40) of proof decimal coins in the post yesterday and some of them have finger prints on them (Grrrrr). Seller will not be getting any more business from me.

What is the best way to remove these?
Soft clean cloth rubbing very gently?

Pillar of the Community
United States
1418 Posts
 Posted 10/19/2009  7:38 pm  Show Profile Bookmark this reply Add tumbleweedtrumpet to your friends list Get a Link to this Reply
Use a coin cloth. They're specially made to wipe and leave no microscopic marks.
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Australia
11285 Posts
 Posted 10/19/2009  8:17 pm  Show Profile Bookmark this reply Add Sap to your friends list Get a Link to this Reply
No rubbing! Never rub anything on a proof coin. It'll look even worse afterwards.

Getting rid of fingerprints depends on how fresh the prints are. If they're very fresh, a quick rinse in acetone will wash away the fingerprint oils and ignore anything else on the coin's surface.

If they're old prints that have been developing there for years, such that the metal has discoloured (brown prints on copper coins, white or grey prints on silver or cupronickel) there's not much you can do to get rid of them that isn't considered "cleaning".
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
Pillar of the Community
Australia
1040 Posts
 Posted 10/19/2009  10:19 pm  Show Profile Bookmark this reply Add latman100 to your friends list Get a Link to this Reply
What Sap said. Only make sure it is 100% pure acetone from Bunnings or somewhere similar. No nail polish remover, which contains contaminants. Do a search for acetone and you will find plenty of threads.
Valued Member
Australia
464 Posts
 Posted 10/19/2009  10:34 pm  Show Profile Bookmark this reply Add dibby33 to your friends list Get a Link to this Reply
Bunnings it is. I am a little peeved to say the least. Maybe that was why they were cheap!
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