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 Replies: 14 / Views: 1,345 |
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Pillar of the Community
United Kingdom
575 Posts |
 Its quite rare coin and I dont want to destroy it.Any tips how to do it? Edited by valdiman
06/09/2009 4:26 pm
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Moderator
 United States
23522 Posts |
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Its quite rare coin and I dont want to destroy it.Any tips how to do it? If this is a rare coin, the only proper advice is don't touch it. There is no form of "cleaning," at least in the case of a coin this dark, which will not make it obvious the coin has been "helped." This will seriously compromise the value of the coin, any way you look at it. Numismatic Conservation Services in the US, affiliated with NGC, is considered to be a valid and acceptable vendor for coin "conservation" services. On your side of the pond, I suspect this opinion might be less valid - Europeans (perhaps sensibly) lend less credence to US third-party graders. So, consideration should be given to your plans for the coin. Is it to be resold? If so, where will your likely buyer be? I cannot believe that a coin with this degree of patina (corrosion?) will achieve an "original surfaces" opinion from any reputable third-party grader, even if NCS is able to safely improve its' appearance, and this must also be a consideration. |
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Pillar of the Community
 United Kingdom
575 Posts |
This particular coin is not for sale.Ive been thinking about NCS.I wonder-how it going to affect value of the coin?this is silver coin so huge part of the surface is cover with patina.
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Moderator
United States
23522 Posts |
There is always the possibility - in your case, I think it likely - that NCS will refuse to conserve the coin because they believe they'll do more harm than good. Even if they do - again, I consider it likely in this case - it'll probably end up in a "Net" slab.
Were this a typical US coin, I could safely say that in all but the rarest issues the "Net" grade would cost 25-50% of the coin's value. If it were an issue for which only a few (let's say, no more than 100) examples were known, the loss of value would be much less.
Your coin looks to have both a buildup of something non-coin, and standard silver oxidation. These could possibly be safely removed without damaging the underlying coin, but there would likely result a difference of appearance between the worst areas and the better. That would lead to a "non-original surfaces" designation.
I'm unfamiliar with this issue - what is it specifically, and how rare is it?
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Pillar of the Community
United Kingdom
575 Posts |
This is 10 zlotych 1823.Is really hard to value.There is plenty of 2 I 5 zloty dated 1823.Ive never saw 10 on auction.Unfortunately I don't have an access to auctions archives.
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Forum Kid
Kuwait
1523 Posts |
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New Member
United States
22 Posts |
If its a rare coin I wouldn't clean it because you're decreasing the value
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Moderator
United States
16677 Posts |
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it'll probably end up in a "Net" slab.
It definitely will due to the corroded surfaces. NCS would be the best bet if it is in fact, rare. swcoin.ecrater.com
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Moderator
United States
23522 Posts |
Mintage of 1124. Pretty scarce. I found record of one at Heritage, a (well-graded) XF45 example which sold for US$4300 in 2006. Yeah, I'd call that rare.  This one is probably worth the investment to see if NCS is willing to undertake it. I do not know how that would work, shipping from overseas; you would of course want the tightest-possible tracking on the package. Again, though, I'm not confident in the outcome. They will most likely refuse to conserve, given the degree of corrosion. For the record, membership at ha.com is free and allows you access to the largest database of coin auction sales in existence. |
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Pillar of the Community
Canada
1248 Posts |
Why not call NCS and find out?
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Bedrock of the Community
United States
20753 Posts |
If your not planning on selling that coin I'd say just leave it alone. Possibly encase it in some type of encasement to stop further problems.
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Pillar of the Community
United Kingdom
575 Posts |
Thank you for all comments.I get in touch with NCS.If they decide not to clean it-I close coin in air tide capsule.How knows?Maybe soon cleaning technology change and will be much safer to do it.Many thanks for professional opinions.Regards
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Moderator
United States
23522 Posts |
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Why not call NCS and find out? They will not make this decision based on communication. Although an initial call might be in order so the owner can figure out the details of shipping to them, NCS will want the coin in-hand to determine its' eligibility for conservation. That's only smart business. |
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Pillar of the Community
United Kingdom
575 Posts |
I wonder how high can be restoration price.If its based on auction prices-can reach more then 1000$.
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Moderator
United States
23522 Posts |
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I wonder how high can be restoration price.If its based on auction prices-can reach more then 1000$.
The fee for inspection is 1% of the fair market value of the coin (minimum $5), and for conservation 4% (minimum $15). If you wish the result to be encapsulated, standard NGC grading fees apply. It will be difficult to determine fair market value in the case of this rare coin, and the question of fair value if the coin will only receive a Net grade must be considered. For this reason, I would advise contacting and negotiating with NCS prior to submitting. |
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Replies: 14 / Views: 1,345 |
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Posted 06/09/2009 4:43 pm
