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cleaning varnish off an old copper coin
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<p>[QUOTE="John Burgess, post: 7893629, member: 105098"]Better pictures of the whole coin might help in determining what it is. This picture kind of looks like the coin is worn, and the coating you have issue with is cracked and old and chipping off here and there. If it's old, it's likely laquer. But the metal under what's left has been protected while where its come off has toned so even when you remove it, it's going to look "off" from the metal not toning where it's protected, and toning where it isn't protected, but if the laquer is old and cloudy/ crusty looking it might still be an improvement.</p><p><br /></p><p>It could probably be removed with pure acetone if it's laquer and pure acetone should not damage the coin itself. Probably an hour soak, then a quick rinse in clean acetone to wash off any remaining dissolved laquer.[/QUOTE]</p><p><br /></p>
[QUOTE="John Burgess, post: 7893629, member: 105098"]Better pictures of the whole coin might help in determining what it is. This picture kind of looks like the coin is worn, and the coating you have issue with is cracked and old and chipping off here and there. If it's old, it's likely laquer. But the metal under what's left has been protected while where its come off has toned so even when you remove it, it's going to look "off" from the metal not toning where it's protected, and toning where it isn't protected, but if the laquer is old and cloudy/ crusty looking it might still be an improvement. It could probably be removed with pure acetone if it's laquer and pure acetone should not damage the coin itself. Probably an hour soak, then a quick rinse in clean acetone to wash off any remaining dissolved laquer.[/QUOTE]
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cleaning varnish off an old copper coin
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