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<p>[QUOTE=&quot;SuperDave, post: 2756005, member: 1892&quot;]And don&#039;t forget - the damage done by dipping is cumulative; the coin never &quot;heals&quot; from a previous dipping. It will stand only a certain number of total seconds in dip before being ruined forever, and that number varies. I&#039;ve ruined a few as experiments, and the longest total time I ever managed was about ten seconds before the finish was so dulled you could tell. The shortest was, well, it didn&#039;t survive my first three-second dip intact. Somebody had probably already dipped that one to within an inch of its&#039; life before me, but it could also have just been a weakly-lustrous strike from a very worn die, with little of the microscopic structures which form &quot;luster.&quot; </p><p><br /></p><p>In your case, it&#039;s reasonable to assume that any exposure to thiourea will be the first for that coin, since it was in OG packaging, but in general the coin&#039;s previous history - which you won&#039;t know - is an important factor in deciding whether or not to dip a coin.</p><p><br /></p><p>So you can see why I consider dipping to be a last, desperate measure. It&#039;s Russian Roulette with a coin.[/QUOTE]</p><p><br /></p>

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