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<p>[QUOTE=&quot;iPen, post: 2094804, member: 69760&quot;]How about any one-off silverpoint paper or bank notes? Silver wire/rod was used since ancient times to draw (manually by hand, not by any sort of press to my knowledge, so it&#039;s not practical for widespread use). It doesn&#039;t erase, at least not at all easily, so it should last a long time depending on the note material. In fact, many of Leonardo da Vinci and Raphael&#039;s drawings were silverpoint and they&#039;re still in existence today. Maybe some bank or mint over the centuries made one (?). Maybe even just silverpoint signatures on paper notes.</p><p><br /></p><p><br /></p><p>Some of Leonardo da Vinci&#039;s drawings with silverpoint:</p><p><br /></p><p><img src="https://classconnection.s3.amazonaws.com/740/flashcards/2802740/png/leonardo's_drawings_31361219778718.png" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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