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<p>[QUOTE=&quot;Conder101, post: 1442703, member: 66&quot;]No, but if he is doing an experimental procedure he can have you sign a liability waiver in case it fails and that would hold up.&nbsp; And since you really can&#039;t run tests on the coin every conservation attempt is something of an experiment.&nbsp; You can try what has worked in the past, but sometimes things just go wrong.</p><p><br /></p><p>Also in art restoration they typically have a long time to study the object and they start the restoration in one small area that allows them to judge how it is proceeding.&nbsp; It isn&#039;t a case of &quot;Here&#039;s the painting it needs to be finished next week, and you have to treat the whole painting at once.&quot;&nbsp; And some art restorations go badly as well.[/QUOTE]</p><p><br /></p>

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