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<p>[QUOTE=&quot;GDJMSP, post: 3152, member: 112&quot;]Baking soda is a common household item sold in any grocery store. It has the effect of neutralizing acidic chemicals.</p><p><br /></p><p>But I am afraid Ben_Bovas is correct - what has been done cannot be undone. The best thing you can get from this experience is what you have learned about using acid on coins. Don&#039;t do it.</p><p><br /></p><p>As a general rule cleaning or conserving coins in any manner is not a good idea. Especially when undertaken by the inexperienced and many times even by the very experienced. It is all too easy to ruin a coin and destroy any numismatic value it may have.</p><p><br /></p><p>I would suggest that you read this article about the proper handling of coins - <a href="http://www.coinworld.com/news/033103/bw_0331.asp" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.coinworld.com/news/033103/bw_0331.asp" rel="nofollow">Proper Handling</a> </p><p><br /></p><p>There are a great many other informative articles available on the Coin World site - read them. Just type a key word into the Search box and hit the Enter key on your keyboard.[/QUOTE]</p><p><br /></p>

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