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<p>[QUOTE=&quot;GDJMSP, post: 3250764, member: 112&quot;]John, fully 80% of all older coins have been dipped. And yes that is a realistic number. And millions upon millions of them are in cleanly graded slabs. NGC and PCGS both dip coins themselves, and then slab and grade them. And they have both done this basically since they opened their doors for business. But it has only been since 2007 that they began advertising to do it for you.</p><p><br /></p><p>Dipping coins to remove toning is and always has been completely acceptable in the numismatic community. And dipping has been quite common for centuries, not just a few years. It was invented in Europe long before the US even existed.</p><p><br /></p><p>Now I think most folks are aware that the TPGs have been dipping coins since 2007, but far fewer of them are aware that they were doing it long before that as well as I stated above. The oldest known published confirmation of this were articles in Numismatic News and Coin World back in 1995. See below for a reference.</p><p><br /></p><p>PCGS and NGC Dipping Coins</p><p><br /></p><p>The Professional Coin Grading Service and the Numismatic Guaranty Corporation</p><p>have confirmed that they have been dipping coins upon request. The coins are</p><p>not marked on the slab as cleaned.</p><p><br /></p><p>References: Numismatic News, 8 Aug 1995, p. 1; Coin World, 18 Sep 1995,</p><p>p. 1, 7.[/QUOTE]</p><p><br /></p>

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