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<p>[QUOTE=&quot;Ian, post: 21374, member: 283&quot;]Hi,</p><p><br /></p><p>harshly cleaning coins (as evidences in your scans) is a big no-no in numismatics. of course, they are your coins and you are free to do with them as you please, but you should be made aware that a coin so `cleaned&#039; is irrevocably damaged numismatically and any collector value there may have been is lost.</p><p><br /></p><p>Of course, you are not talking about any numismatic rarity in the one cleaned, but I do hope you will desist from cleaning anything this way, just in case you do wander upon a modern rarity by chance /accident.&nbsp; Tarnish is not `dirt&#039;. It is part of the natural ageing process of metal and coins, and most collectors consider it part of the character of the coin. </p><p><br /></p><p>I have to confess that in the past I have used modern coins as `experiments&#039; with my own skills in removing dirt / sticky tape and other substances that did not originate with the coin, so I am not guiltless.&nbsp; In general cleaning is frowned upon and even coins that were cleaned a hundred years ago can be identified as `cleaned coins&#039; by a collector. </p><p><br /></p><p>Although there are exceptions to everything, you would do well to adopt the motto that a cleaned coin is a ruined coin.</p><p><br /></p><p>Ian[/QUOTE]</p><p><br /></p>

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