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<p>[QUOTE=&quot;GDJMSP, post: 2654200, member: 112&quot;]Nor do I think it is &quot;necessary&quot;. But I do think it is a good idea.</p><p><br /></p><p><br /></p><p><br /></p><p>And it does, it prevents those few cases where the coin develops a whitish cast to it. And no that whitish cast is not because of impurities, or something that was already on the coin, or from doing it wrong. Quite simply it just happens sometimes.</p><p><br /></p><p>As for the argument that final rinsing in distilled water just rehydrates a coin that you just got done dehydrating - horse puckey ! Metal doesn&#039;t absorb water to begin with so you didn&#039;t rehydrate or dehydrate it because both are impossible to do.</p><p><br /></p><p>And besides that, the surface of the coin is going to be exposed to exactly the same amount of moisture if you stop after rinsing in acetone as it will be if you do a final rinse in distilled water. That is because of the moisture in the air - humidity. </p><p><br /></p><p>In other words, the drying effects of the acetone are just as temporary as the wetting effects of the water because both water and acetone evaporate off the coin. And once that happens any moisture the surface of the coin is exposed to is determined by whatever the humidity happens to be. The coin will be no wetter nor any drier in either case.[/QUOTE]</p><p><br /></p>

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