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<p>[QUOTE=&quot;funkee, post: 1842230, member: 37925&quot;]The serial numbers can still be present without the seal. You&#039;re thinking of an error where the entire 3rd printing is missing. A seal can be under-inked, with the remaining parts perfectly printed. Take a look at the note below where the federal reserve bank seal is under-inked, but the district numbers (part of the same printing) are mostly strong.</p><p><br /></p><p><br /></p><p>[ATTACH=full]306155[/ATTACH] </p><p><br /></p><p><br /></p><p>Another possibility is that there was an obstruction in that area (like a piece of cardboard), which prevented the seal from being printed. However, due to the presence of some faint yellow discoloration, I&#039;m inclined to suppose chemical alteration. Concentrated oxalic acid will remove the red without (significantly) harming the black ink behind it.[/QUOTE]</p><p><br /></p>

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