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<p>[QUOTE=&quot;CamaroDMD, post: 2920838, member: 5233&quot;]The point you seem to be missing is that dipping a coin protects the surface.&nbsp; Yes, a mild acid is used and if it is used improperly it can damage the coin.&nbsp; But...all coins develop an oxide layer on them over time.&nbsp; This is because all metal (even gold) is reactive.&nbsp; If given enough time, this oxide layer can become damaging to the coin itself...it will eat away the surface.&nbsp; Removing it prevents this from happening.[/QUOTE]</p><p><br /></p>

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