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numpty's finds with an old coinmaster 5000D
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<blockquote data-quote="Goldpick" data-source="post: 232473" data-attributes="member: 1695"><p>Strange, should clean up ok, over 90% copper with some Nickel thrown in for good measure, though if heavily oxidised, it may not be aggressive enough, or require an extended bath.</p><p></p><p>Electrolysis should clean it well, just don't leave it too long if you give it a go. It will usually get rid of all the crustys, and leave pitting on the coin where ever any oxidation is apparent.</p></blockquote><p></p>
[QUOTE="Goldpick, post: 232473, member: 1695"] Strange, should clean up ok, over 90% copper with some Nickel thrown in for good measure, though if heavily oxidised, it may not be aggressive enough, or require an extended bath. Electrolysis should clean it well, just don't leave it too long if you give it a go. It will usually get rid of all the crustys, and leave pitting on the coin where ever any oxidation is apparent. [/QUOTE]
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numpty's finds with an old coinmaster 5000D
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