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<p>[QUOTE=&quot;BadThad, post: 1248018, member: 17261&quot;]To the best of my knowledge, there are only tidbits of infomation here and there and in books on conservation. If i ever get my book done, it could be one of the better references published....but I just haven&#039;t had time to work on it (I was laid-off when I started it).</p><p><br /></p><p>The problem is that there&#039;s no single process or method that can safely be specified.&nbsp; Consider coins can range from detector finds, to encusted&nbsp; ancients to simple surface corrosion to a spot of grease. Coins are like people, they vary greatly and the treatments for problem coins vary greatly. Each conservation project must be performed on an ad hoc basis.</p><p><br /></p><p>As far as generalizations, all I can offer is the standard solvent polarity ladder method. It is safe (given pure reagents) and accepted by numismatists as gentle. Soak coins in the following solvents, in this order:</p><p><br /></p><p>1) Distilled or deionized water</p><p>2) Acetone</p><p>3) Xylene</p><p><br /></p><p>Going beyond those three solvents requires the understanding that the surfaces may be damaged or altered by anything you might use. There&#039;s a million different things collectors recommend from olive oil to lemon juice and each has it&#039;s problems. Spend some time searching this forum and the internet and you&#039;ll find gobs of information.....however, most of it is bad. LOL There&#039;s a reason places like NCS exist. Most conservation projects should be left to the professionals and very experienced as the end-results by the amateur are seldom pleasing.[/QUOTE]</p><p><br /></p>

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