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<p>[QUOTE="Guardian1, post: 1994354, member: 72392"]Yes, I wouldn't do this to a coin that had any other value not including face value. I have used it as a test, and have used it on newer pennies. Was hesitant to clean older pennies. Just decided it's best left as they are. </p><p><br /></p><p>The great thing with the ketchup, so far at least, is unless it's heavily corroded, no scrubbing is needed. A minute or less and it's good as new.</p><p><br /></p><p>To be honest, what I use this for the most is testing old corroded metals by putting a little on, and seeing if it is actually copper or not. I've kept a few junk pieces of metal before that weigh a few pounds because of the copper content.[/QUOTE]</p><p><br /></p>
[QUOTE="Guardian1, post: 1994354, member: 72392"]Yes, I wouldn't do this to a coin that had any other value not including face value. I have used it as a test, and have used it on newer pennies. Was hesitant to clean older pennies. Just decided it's best left as they are. The great thing with the ketchup, so far at least, is unless it's heavily corroded, no scrubbing is needed. A minute or less and it's good as new. To be honest, what I use this for the most is testing old corroded metals by putting a little on, and seeing if it is actually copper or not. I've kept a few junk pieces of metal before that weigh a few pounds because of the copper content.[/QUOTE]
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