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<p>[QUOTE=&quot;JBK, post: 338722, member: 1101&quot;]I am no expert on those pens, but while the ink disappears to the eye, there may still be something left on the note.&nbsp; The ink doesn&#039;t evaporate (as far as I know) - it just disappears in regard to visibility.&nbsp; I wonder if it would be visible under other conditions (blacklight, chemicals, etc.)</p><p><br /></p><p>Plus, it might affect the long term aging of the note - it might darken over time, or it might prevent that part of the paper from toning naturally if that happens to occur.</p><p><br /></p><p>Not sure on any of this - just some ideas.[/QUOTE]</p><p><br /></p>

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