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<p>[QUOTE=&quot;daveydempsey, post: 4417685, member: 22&quot;]Vinegar is an acid and Brasso is abrasive, not recommended on coins.</p><p><br /></p><p>Coins and medals should not be cleaned, however verdigris is a form of bronze disease and can destroy your coin very quickly.</p><p><br /></p><p>Virgin olive oil gently kills the verdigris.</p><p><br /></p><p>I&#039;ve had 500 year old copper coins dug from the ground covered in verdigris and had them soaking upto a year, it really works.</p><p>I&#039;ve found 2000 year old coins metal detecting and olive oil works a treat in restoring them.[/QUOTE]</p><p><br /></p>

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