How to Tell if A Coin Has been Cleaned?
Silver Coins August 6th, 2009If a vintage coin gives a lustrous look, in all probability it has been cleaned. Cleaning a coin is the surest way to kill its value to a numismatist. When a coin is minted, because of the pressure applied, on the planchet some molecular changes take place resulting in a flow of the metal which gives rise to a pattern on the surface of the coin called cartwheels. These are extremely delicate line patterns which are formed and are clearly visible under a microscope. Some of these cartwheel patterns get damaged due to natural use of the coin, however they are not totally destroyed.
If a coin has been cleaned, it is a sure shot way to destroy the entire pattern and thus the value of the coin. Numismatists do not mind if the coin is covered in dirt and grime and has stains and does not have the looks of a new coin, as long as the cartwheel patterns are present. The older the coin, the more valuable it is but if it has been cleaned, then it will at best fetch the intrinsic value of the coin and will not classify as a collector’s object.
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January 24th, 2010 at 7:31 pm
The author of silvercoinbuying.com has written an excellent article. You have made your point and there is not much to argue about. It is like the following universal truth that you can not argue with: There is always someone more intelligent than you (and they will NEVER call when you do tech support). Thanks for the info.