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Treasure Hunting
Cleaning Your Finds
Ultrasonic Cleaners for Coins
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<blockquote data-quote="Ded Driver" data-source="post: 477739" data-attributes="member: 12692"><p>as a coin collector I have to say 'be careful & wary of cleaning old coins'. Doing so in a tumbler is about the worst thing you can do for a coins value, ultrasonic can be ok, but be careful</p><p>An old coin with patina can be worth more than one that has been cleaned back to bare metal.</p><p>do not use 'Coke' or any acidic cleaner on a coin if you intend to ever sell it (Coke contains dilute phosphoric acid, the stuff they put in Mag/Alloy wheel cleaner. It strips the oxidised surface layer off)</p></blockquote><p></p>
[QUOTE="Ded Driver, post: 477739, member: 12692"] as a coin collector I have to say 'be careful & wary of cleaning old coins'. Doing so in a tumbler is about the worst thing you can do for a coins value, ultrasonic can be ok, but be careful An old coin with patina can be worth more than one that has been cleaned back to bare metal. do not use 'Coke' or any acidic cleaner on a coin if you intend to ever sell it (Coke contains dilute phosphoric acid, the stuff they put in Mag/Alloy wheel cleaner. It strips the oxidised surface layer off) [/QUOTE]
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Treasure Hunting
Cleaning Your Finds
Ultrasonic Cleaners for Coins
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