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<p>[QUOTE=&quot;BadThad, post: 964591, member: 17261&quot;]Brasso is very, very bad for coins.....probably one of the worst with silica powder included as an abrasive.</p><p>&nbsp;</p><p>Interesting formula Jim, the in-situ formation of ammonium oxalate with some reserve alkalinity from the excess ammonia.[/QUOTE]</p><p><br /></p>

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