What is the best way to remove a finger print on copper?
PTVETTER
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Someone knows!
Pat Vetter,Mercury Dime registry set,1938 Proof set registry,Pat & BJ Coins:724-325-7211
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The best way to get rid of a coin with a fingerprint is to sell it. (not to me)
Once that oil from the finger print is etched into the copper I think it’s permanent
Sorry 😐
https://www.pcgs.com/setregistry/quarters/washington-quarters-major-sets/washington-quarters-date-set-circulation-strikes-1932-present/publishedset/209923
https://www.pcgs.com/setregistry/quarters/washington-quarters-major-sets/washington-quarters-date-set-circulation-strikes-1932-present/album/209923
Fingerprint juice contains lots of chemicals including salt. Etching of the copper is forever. Peace Roy
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MS 70? @Kkathyl used it with some success. She started a thread about it.
Sometimes, it’s better to be LUCKY than good. 🍀 🍺👍
My Full Walker Registry Set (1916-1947):
https://www.ngccoin.com/registry/competitive-sets/16292/
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Collector, occasional seller
If you used that monster, then you'd have no coin left at all! LOL
Sometimes, it’s better to be LUCKY than good. 🍀 🍺👍
My Full Walker Registry Set (1916-1947):
https://www.ngccoin.com/registry/competitive-sets/16292/
I guess it is one of those best keep secrets !!
I know it has been done and some of those big name dealers know !
If any one found away to remove finger prints, they would make a lot of money....
WS
Perhaps with a jackhammer? Seriously, once something like that gets into the surface of a copper coin, it’s there for good.
Lift the finger off the coin.
Unless it is immediately dipped in acetone or another substance that will not attack the metal, it likely will etch the surface and the image cannot be removed.... I once accidentally fumbled a proof British coin and grabbed it, putting a print on the field... I immediately put Dawn dish cleaning liquid on it... let it set for a while... and then rinsed in hot water, alcohol and hot water again... it worked... but if I had not done it immediately, the acids in the skin oil would have etched it permanently... Cheers, RickO
That’s the point of My exercise here. Like Roger said acetone it immediately. I was given this coin for attending a coin instruction class as winning the most correct answers. It was received in a flip. Flips require inserting and usually done my low wage EE in mass quantities. Anything big requires more effort to shove in. Cloth gloves are required wearing but sometimes in either putting in or taking out it happens some think holding edge is good enough. It can happen at mints distribution or received by collectors.
Any coin you find in circulation should assume will have a print adventually Protect your coins wear gloves do the right thing.
Best place to buy !
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Is there a doctor in the house?
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Dynamite
As others have mentioned, it would depend on how long the fingerprint has been on the coin and the acidity level of the finger that put the fingerprint there. But copper reacts, and once it does - forget it. If I remember correctly, one standard ASTM corrosion spot test involves bright copper strips.
I knew it would happen.