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Cleaning Copper Pennies

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 Posted 05/04/2014  11:55 am  Show Profile   Bookmark this reply Add Tim Stroud to your friends list
Just use a 10 grit sanding disk, it will be a lot faster.
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 Posted 05/04/2014  12:15 pm  Show Profile   Bookmark this reply Add SsuperDdave to your friends list
If you're going to spend them (because that's all they will be worth after the cleaning), then why clean them?
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 Posted 05/04/2014  1:13 pm  Show Profile   Bookmark this reply Add shadz to your friends list
i do it to find out what it is. is it a zincoln or a copper LMC? found out mine was a very worn and corroded 1921 S. too bad shape to fill a hole, but I put it in the paint pile and may liven it back up with the paint so it can be seen as a 1921 again without a microscope.
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 Posted 05/04/2014  3:26 pm  Show Profile   Bookmark this reply Add CelticKnot to your friends list
You don't need to clean them in order to determine their composition.
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 Posted 05/04/2014  11:06 pm  Show Profile   Bookmark this reply Add shadz to your friends list
So I must collect coins based on your or some one else's criteria? Sorry I was under the false impression my collection was MY choice what to keep and why. So in MY collection, a grime covered verdigris covered coin that cannot even be told if it IS a coin gets cleaned so features can be seen and possibly even a date.

a 1921 S cleaned is still a 1921 S in MY collection. Better to have a cleaned identifiable 1921 S than just a grimy corroded green metal disk.
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 Posted 05/04/2014  11:17 pm  Show Profile   Bookmark this reply Add cjspearsdog to your friends list
I think shadz is talking about dug coins. I soak my wheats (That I dig up) in olive oil for a couple weeks. Works alright for me. I have been able to read every date so far.

Cory
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 Posted 05/04/2014  11:33 pm  Show Profile   Bookmark this reply Add shadz to your friends list
Extra virgin, that sweet oil stuff, or what? does the olive oil remove the verdigris?
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 Posted 05/05/2014  06:53 am  Show Profile   Bookmark this reply Add CoinsKelly to your friends list
I like verdi-care for the green stuff. If cleaning, I would think the best method would be the one that would cause the least change in metal and the tumbler would definitely cause change to the metal.
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 Posted 05/05/2014  07:22 am  Show Profile   Bookmark this reply Add SsuperDdave to your friends list

Quote:
does the olive oil remove the verdigris?


First, I didn't know you were talking about dug coins so I take back the post I didn't make.

Olive oil won't stop verdigris. I *do* like the stuff as a cleaning agent in the right situation, though, especially heavily-encrusted coins. I soaked an IHC for a full year, once. It was barely readable before (no pics), but here's the "after:"

Cleaning-Copper-Pennies

Cleaning-Copper-Pennies

The whole coin was originally that black, and most of it had a thickness dimension. Not it's just a patina.
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 Posted 05/05/2014  10:52 am  Show Profile   Check 52Raymo's eBay Listings Bookmark this reply Add 52Raymo to your friends list
Wow that 1907 was lost shortly after it was minted. Did you detect it ?
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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 Posted 05/05/2014  12:02 pm  Show Profile   Bookmark this reply Add SsuperDdave to your friends list

Quote:
Wow that 1907 was lost shortly after it was minted. Did you detect it ?


No, it was part of an auction lot I bought. Had no clue the thing was darn near Uncirculated when I first started the project.
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 Posted 05/05/2014  12:03 pm  Show Profile   Bookmark this reply Add just carl to your friends list
Cleaning things is sometimes complicated. For example cleaning used ammo cartridges is sort of a necessity. Cleaning a car gets dirt, salt, road tars off which could damage the paint and undercaridge. Cleaning a Mummy from an Egypian tomb could really do some damage. Cleaning your windows where you live allows more sunlight to get in and better to spy on your neighbors. Cleaning yourself helps in sanitation. HOWEVER, cleaning a coin usually takes of material and helps ruin it for collecting purposes.
Cleaning STUFF is sort of complicated.
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 Posted 05/05/2014  12:13 pm  Show Profile   Bookmark this reply Add CoinsKelly to your friends list
Carl, you just made re-think cleaning my windows...if I can spy on the neighbors then the neighbors can spy on me...
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 Posted 05/08/2014  2:57 pm  Show Profile   Bookmark this reply Add Waxemm to your friends list

Quote:
So I must collect coins based on your or some one else's criteria?


I don't think anyone is telling you how to control your collection. I think they are just trying to look out for the benefit of the coin, and the value of your collection. It's a matter some people get very passionate about.

I tend to agree with you though. I have many coins that I have bought and or found, that for my personal collection, have cleaned. A cleaned 1877 Indian Head cent is worth more than an unrecognizable disk. If it's something I plan to get rid of, I leave it as is.
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 Posted 05/11/2014  12:22 am  Show Profile   Bookmark this reply Add frodo to your friends list
i use a scale to figure out copper from zinc
http://www.midwayusa.com/product/14...ity-110-volt

3.11G is copper 2.5G is zinc

i can see why cleaning is bad for a collection, just depends on what you want to do with the collection.for resale its a no no..

super dave...
that 1907 is beautiful!
Edited by frodo
05/11/2014 12:27 am
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