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#9785352 - 02/01/17 08:49 PM Can someone educate me on spotting a cleaned coin?
the_Thing Offline

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Here is an example. What gives it away. Some are obvious, but I run across a lot that I can't see the reason.

Cleaned NGC Morgan
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#9785358 - 02/01/17 08:51 PM Re: Can someone educate me on spotting a cleaned coin? [Re: the_Thing ]
the_Thing Offline

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Another one I can't tell has been cleaned, but I'd guess the reverse gives it away? I can see no evidence of cleaning on the obverse.

CLeaned Morgan Dollar


Edited by the_Thing (02/01/17 08:53 PM)
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#9785412 - 02/01/17 09:23 PM Re: Can someone educate me on spotting a cleaned coin? [Re: the_Thing ]
MarkFeld Offline
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 Originally Posted By: the_Thing
Another one I can't tell has been cleaned, but I'd guess the reverse gives it away? I can see no evidence of cleaning on the obverse.

CLeaned Morgan Dollar


Often, a coin needs to be examined in hand and tilted and rotated under a light, in order to detect cleaning. Don't assume that the coin in question has been cleaned on the reverse and not the obverse.

Also, the determination of cleaning can be subjective and inconsistent. Some coins are labeled "cleaned", but later cracked out, resubmitted and graded without the notation of cleaning. Others might not be labeled as cleaned when initially graded, but later cracked out, resubmitted and labeled "cleaned".
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#9785445 - 02/01/17 09:38 PM Re: Can someone educate me on spotting a cleaned coin? [Re: the_Thing ]
James_OldeTowne Offline
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Trying to use photos to learn about cleaning is just about impossible, especially when so many photos of cleaned coins are taken in such a manner as to intentionally minimize the symptoms of cleaning.
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#9785518 - 02/01/17 10:22 PM Re: Can someone educate me on spotting a cleaned coin? [Re: James_OldeTowne]
jgenn Offline
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I think your best bet is to hit a coin show and bring a loupe and check out a bunch of slabbed straight graded coins for hairlines. You will find some hairlines on the lower MS grades. The key is to get a sense for how many hairlines are tolerated at each grade level. Any more than that and you are looking at a "cleaned" coin.
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#9785520 - 02/01/17 10:26 PM Re: Can someone educate me on spotting a cleaned coin? [Re: jgenn]
RWB Offline
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"....on spotting a cleaned coin?"

Well --- there's good advice in the other posts. But, I'd like to know why you want to put spots on a coin that has already been cleaned....? Maybe on one of those NCLT leopard coins, or even parts of a giraffe....or, lady bugs...?

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#9785549 - 02/01/17 10:53 PM Re: Can someone educate me on spotting a cleaned coin? [Re: jgenn]
MarkFeld Offline
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 Originally Posted By: jgenn
I think your best bet is to hit a coin show and bring a loupe and check out a bunch of slabbed straight graded coins for hairlines. You will find some hairlines on the lower MS grades. The key is to get a sense for how many hairlines are tolerated at each grade level. Any more than that and you are looking at a "cleaned" coin.


Not all cleaning results in hairlines. And hairlines can be found on high grade coins, not just lower grade ones. Additionally, most Proof coins display hairlining to some extent, even if they haven't been cleaned.
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#9785767 - 02/02/17 06:17 AM Re: Can someone educate me on spotting a cleaned coin? [Re: MarkFeld]
physics-fan3.14 Offline

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 Quote:
Can someone educate me on spotting a cleaned coin?


I suspect that you want a little more detail than has been provided so far. Check out an article that I wrote, here: http://boards.collectors-society.com/ubbthreads.php?ubb=showflat&Number=4855769

If you want more information, check out my book, "The Art and Science of Grading Coins."
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#9785829 - 02/02/17 08:37 AM Re: Can someone educate me on spotting a cleaned coin? [Re: MarkFeld]
mark Offline
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Registered: 01/28/02
Posts: 365
Mark:

Other than cleaning, what is the most common way for proofs to acquire hairlines? For 19th century proofs, was it perhaps their storage by collectors?

Thanks in advance!

Mark

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#9785852 - 02/02/17 09:00 AM Re: Can someone educate me on spotting a cleaned coin? [Re: mark]
MarkFeld Offline
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Registered: 09/23/02
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 Originally Posted By: mark
Mark:

Other than cleaning, what is the most common way for proofs to acquire hairlines? For 19th century proofs, was it perhaps their storage by collectors?

Thanks in advance!

Mark


Most likely, moving around in envelopes, sliding around in trays or mishandling in albums.
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