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<p>[QUOTE=&quot;John Burgess, post: 7324138, member: 105098&quot;]the more I think about it, The more I think that&#039;s what&#039;s going on, contact with sulfur and air. maybe a Kraft paper envelop or storage in a early holder with sulfur or a&nbsp; chloride, some chemical in the paper process.</p><p><br /></p><p>No idea what you have into this coin, or if it&#039;s worth sending for conservation and reholdering, or if it would even help to fix the issue or wouldn&#039;t uncover a bigger issue. I know &quot;In cases where <b>PCGS</b> determines that <b>removing toning is</b> necessary and desirable and <b>will</b> not detract from the coin, it may be done&quot;.</p><p><br /></p><p><a href="https://www.pcgs.com/coinfacts/coin/1961-50c-ddr-fs-803/146013" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.pcgs.com/coinfacts/coin/1961-50c-ddr-fs-803/146013" rel="nofollow">https://www.pcgs.com/coinfacts/coin/1961-50c-ddr-fs-803/146013</a></p><p>the PR67 on this page on the right shows signs on both sides of the same spotting, although no streaking. I think they all have it, just the first two are pictured with lighting that hides it better, so I think it&#039;s fairly normal for it&#039;s age. </p><p><br /></p><p>for 1960, they seem to really go out of the way to keep them dark so as not to highlight the spotting, but it&#039;s clearly there on most of them that aren&#039;t &quot;lit up&quot; around the edge/rim of the coins. </p><p><br /></p><p>I&#039;d think, and it&#039;s up to you, if you can&#039;t live with it, and unhappy, maybe return the purchase if you can and wash your hands of it rather than follow bad money with bad money.</p><p>If it was cheap enough, if the DDR is one of the more valuable ones, if it&#039;s cost effective and hard to find a better example of, then it might be worth the conservation costs, and a more modern/new holder listing the specific DDR all in all might be a win overall. </p><p><br /></p><p>What I can gather from what&#039;s visible of the slab, it&#039;s a Generation 4 or Generation 5 ANACS slab, so this was likely in the holder around 1991-1996 if it&#039;s not that small as Gen4,I think. If Gen5 it&#039;s 1996-1999 I think. I&#039;m not too great at identifying the slabs,&nbsp; </p><p>either way it&#039;s been in that holder a while I think. It&#039;s 6 digit number and logo on the back is the red/orange color, not the golden.&nbsp; </p><p>i think at least a 20 year old slab and grading. Maybe close to 25-30 years.</p><p><br /></p><p>you can compare slab here if yoyu have interest in nailing it down:</p><p><a href="https://docs.google.com/presentation/d/1Y_6cj6X2v_ZbO4NrqlRLysVeJO1IgoqnAA51ErVhLf8/edit#slide=id.g5f2b1aa021_0_62" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://docs.google.com/presentation/d/1Y_6cj6X2v_ZbO4NrqlRLysVeJO1IgoqnAA51ErVhLf8/edit#slide=id.g5f2b1aa021_0_62" rel="nofollow">https://docs.google.com/presentation/d/1Y_6cj6X2v_ZbO4NrqlRLysVeJO1IgoqnAA51ErVhLf8/edit#slide=id.g5f2b1aa021_0_62</a>[/QUOTE]</p><p><br /></p>

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