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General Advice - How To Tell If A Copper Nickel Piece Is Cleaned?

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Dinkhart's Avatar
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 Posted 06/13/2016  6:35 pm Show Profile   Bookmark this topic Add Dinkhart to your friends list Get a Link to this Message Number of Subscribers
The copper nickel cents of 1857-1864 are currently one of my target series, and I can't afford slabbed coins at the moment so I buy them raw. Problem is it's very hard to tell whether a copper nickel cent has been cleaned. I've seen a lot of photos of slabbed copper nickel coins with details grades but they look pretty ordinary to me. I find it easier to spot a cleaned copper coin because they're generally a weird orange. Some ideas I've had are to look for black grit around the devices and a general flat color, but it seems that some of the slabbed examples without details grades have these features. Suggestions?
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Coinfrog's Avatar
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 Posted 06/13/2016  7:11 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Circulated CN cents tend to have a flat color in general. Almost invariably a cleaned coin will show abrasion lines in the fields under a 7X lens. It won't take long to recognize a natural surface without any magnification - you'll get a feel for it quickly.
Edited by Coinfrog
06/13/2016 7:13 pm
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Coinfrog's Avatar
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 Posted 06/13/2016  7:12 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
and -



to the CCF!
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Dinkhart's Avatar
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 Posted 06/14/2016  08:12 am  Show Profile   Bookmark this reply Add Dinkhart to your friends list Get a Link to this Reply
Thanks for the advice! Hopefully I did well with this one: http://www.ebay.com/itm/252420437243
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billjones's Avatar
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 Posted 06/14/2016  09:16 am  Show Profile   Bookmark this reply Add billjones to your friends list Get a Link to this Reply
The Flying Eagle cent you purchased has original surfaces, but it also has some corrosion. The copper-nickel coins can get green spots, but more often their corrosion areas or spots are black or very dark brown. That coin has some toning that has worked its way into the surfaces.

I regret for your sake that I don't have any photos of circulated Flying Eagle cents. The two coins in my collection are Mint State.

You should get a user number from Heritage Auctions. It's free and it gives you access to photos of the many coins they have sold over the years. You can also access "Coin Facts" which PCGS also offers for free on-line. Both of those sources will provide you with photos of no problem coins.
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 Posted 06/14/2016  10:17 am  Show Profile   Bookmark this reply Add Dinkhart to your friends list Get a Link to this Reply
Corrosion must be pretty common in this series as I see similar dark coloration on many of the CN coins for sale. Here's an IHC I bought not too long ago that I now realize may or may not be corroded:
http://www.ebay.com/itm/152114648337
Even some of the PCGS photograde examples seem to have some dark black and brown, I sure hope they don't ignore corrosion and slab these coins without indication of this problem.
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 Posted 06/14/2016  10:40 am  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply

Never a really sure way to tell if some coins have been cleaned unless done poorly. One way I always look for is dirt inside letters and numbers. Usually a cleaned coin doesn't have such dirt. Harsh cleaning is usually easy to spot with a magnifier. Lines from the cleaning show up.
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