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<p>[QUOTE="GDJMSP, post: 118012, member: 112"]Frank - </p><p><br /></p><p>If I wanted to take the time I could probably find over a hundred or more coin dealers who still recommend that you coat your copper coins in lacquer to protect them. That doesn't mean they are right about it. There are literally thousands of them out there who will take a naturally toned coin they buy and the first thing they do is to dip it. That doesn't make them right either. I think you get my point.</p><p><br /></p><p>The only difference between virgin olive oil and regular is that virgin comes from the first pressing. It doesn't really change anything - they both still contain an acid. This is a scientific fact, not a matter of conjecture or opinion - olive oil contains a mild acid.</p><p><br /></p><p>There's another problem with olive oil - it doesn't evaporate. Once it's on the coin it stays there - unless it is removed. But what do you remove it with ? You could use acetone I suppose. And if you don't remove it then that mild acid sits there on the coin continually working on it. Yes, eventually the olive oil will dry. But when it dries it will leave a crusty film on the surface of the coin that will alter and hinder the appearance of the coin.</p><p><br /></p><p>If you are happy using this method or purchasing coins that have been treated this way - OK, I have no objection. But I feel I would be doing others who read this a disservice if I did not express what I know to be true.[/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 118012, member: 112"]Frank - If I wanted to take the time I could probably find over a hundred or more coin dealers who still recommend that you coat your copper coins in lacquer to protect them. That doesn't mean they are right about it. There are literally thousands of them out there who will take a naturally toned coin they buy and the first thing they do is to dip it. That doesn't make them right either. I think you get my point. The only difference between virgin olive oil and regular is that virgin comes from the first pressing. It doesn't really change anything - they both still contain an acid. This is a scientific fact, not a matter of conjecture or opinion - olive oil contains a mild acid. There's another problem with olive oil - it doesn't evaporate. Once it's on the coin it stays there - unless it is removed. But what do you remove it with ? You could use acetone I suppose. And if you don't remove it then that mild acid sits there on the coin continually working on it. Yes, eventually the olive oil will dry. But when it dries it will leave a crusty film on the surface of the coin that will alter and hinder the appearance of the coin. If you are happy using this method or purchasing coins that have been treated this way - OK, I have no objection. But I feel I would be doing others who read this a disservice if I did not express what I know to be true.[/QUOTE]
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