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Message:: [QUOTE="Coinchemistry 2012, post: 2051562, member: 28107"]You wrote that the luster and the coloration of the ticks and the fields were indicative of a cleaned coin.  I agreed whole heartedly regarding the impaired luster, but I think the last test is worthless as the lack of color could just as easily be the result of dipping (which could be market acceptable) just as often as it could be of cleaning.  That's when you asked for other examples and the thread ensued. With regards to the pieces that I posted, there may have been some that slightly retoned, but as you even note, some of them look like they came straight from the dip jar.  And the fact that several dipped circulated pieces have made it into TPG holders, are extremely obvious, and have still sold for the prices that many of them have sold for suggests an element of market acceptability.  While grading services do make mistakes, experience and auction records suggest that this is more the result of TPG policy (and a policy that is necessarily controlled by the standards of market acceptability else the TPGs would be ignored and relegate to being irrelevant to the market).[/QUOTE]