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<p>[QUOTE=&quot;krispy, post: 1472067, member: 19065&quot;]Here is something else to consider, the note may have been certified and holdered with no detectible wave to the paper, however subsequent improper storage in an environment where moisture/humidity was inconsistent or high, may have effected the note long after returning from certification.</p><p><br /></p><p>From <a href="http://www.pcgscurrency.com/HolderSecurityDescription.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.pcgscurrency.com/HolderSecurityDescription.html" rel="nofollow">PCGS Currency - Our Holder</a>: &quot;Our&nbsp; specially designed grading label and <b>partial open-top holder</b> allow&nbsp; notes to &quot;breathe,&quot; thus preventing the paper from deteriorating due to&nbsp; lack of oxygen.&quot;</p><p><br /></p><p>While the note may be allowed to &quot;breath&quot;, so too can improper storage allow for the introduction of moisture absorbed by the paper from the surrounding environment. This may be a much more likely factor.</p><p><br /></p><p>I don&#039;t think the note &#039;was&#039; over graded but if it were sent in again it may not return with the same grade if that wave is present and the next grader finds it unappealing or distracting. </p><p><br /></p><p><br /></p><p>Typically, in traditional intaglio printing processes, paper must be dampened prior to printing. The same was the case up to the early 1950s when the B.E.P. developed new inks for dry-printing. Since about 1952 paper no longer needed to be dampened before printing. This had the effect of increasing production time.</p><p><br /></p><p><br /></p><p><font size="2"><b><a href="http://moneyfactory.gov/researchcurrency.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://moneyfactory.gov/researchcurrency.html" rel="nofollow">Hydrostatic Presses at the Bureau of Engraving and Printing</a></b></font></p><p><font size="2"><b></b></font>Briefly examines the first attempt at &quot;dry&quot; printing at the BEP.[/QUOTE]</p><p><br /></p>

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