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<p>[QUOTE=&quot;Kentucky, post: 3102843, member: 33176&quot;]Brass brushes are normally softer than the bronze of the coin, so wear can come about depositing debris from the brush on the coin.&nbsp; This debris comes off easily, sometimes with just a water rinse.&nbsp; Steel can scratch the coin.&nbsp; That being said, I have also used steel dental picks.&nbsp; Whatever you use you must be gentle.[/QUOTE]</p><p><br /></p>

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