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<p>[QUOTE=&quot;RomanGreekCoin3, post: 3141092, member: 96564&quot;]I&nbsp; know you really shouldnt do this, but I have cleaned many coins using a brass fine wire brush.</p><p><br /></p><p>If the coin is <b>extremely corroded </b>and you <b>dont really care about the patina</b>( which I dont since&nbsp; most of my coins I got are fairly rough and cheap, you could use&nbsp; a brass wire brush wheel tip on a dremel</p><p><br /></p><p><img src="https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRdQd3K-PNUlj1bbRwCi1iZqWBKEIpeYjMstZ6n_tEDzOztjZAPIA" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>it can&nbsp; get all in the nooks and crannies without really damaging the coin... depending on the corrosion. it helps bring out the bust or legend from underneath alot of&nbsp; crud from the thousands of years buildup on the coin ...</p><p><br /></p><p>it can even polish the patina up of you use it lightly.</p><p><br /></p><p>and brass is as soft as the alloys that they used back then ( brass/copper/ orichalcum )</p><p><br /></p><p><b>I would not use a brass wire brush on silver,</b> it would damage the coin permanently.</p><p><br /></p><p>With the wheels, I have turned culls into half decent coins to my collection- Some that could have never been IDed without cleaning.</p><p><br /></p><p>If keeping the patina is too important to you then dont try it, otherwise, its worth a shot. Keep in mind I dont plan on ever selling the coins I purchase- at least not for a long time.</p><p><br /></p><p>try it on a cheap Roman orichalcum coin( like a&nbsp; constans I/constantinus II. You can see the difference it makes after you use it.[/QUOTE]</p><p><br /></p>

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