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<p>[QUOTE=&quot;krispy, post: 1666456, member: 19065&quot;]You should rule out &#039;shrinkage&#039; for the reason I gave before, not because of any measurement of printed design features. </p><p><br /></p><p>Sometimes dies are re-engraved and the design elements are often only slightly changed on a very, very small scale. This might be considered a security feature, or help printers distinguish dies, although they usually use visible plate numbers to identify them, and it&#039;s more to the plates numbers in a transition between dies where the idea of a mule comes from. While some changes could be tiny, others may be more noticeable depending on what they may have changed and result in a difference being noticeable when compared together as you have. </p><p><br /></p><p>You can also try measuring individual design features between the two notes to see how or which of those are the same scale or different, such as the signatures, the denomination numbers, or how many tiny engraved lines there are in the decorative boarder along the top under the words &quot;silver certificate&quot; running the width of the note. Doing so may help you narrow down what if any changes there may exist and account for the overall difference you found. </p><p><br /></p><p>Determining if its an actual mule or not and if any even exist for the series remains my recommended avenue to pursue and at least rule out. </p><p><a href="http://currency.ha.com/c/ref/questions.zx#Mule_Notes" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://currency.ha.com/c/ref/questions.zx#Mule_Notes" rel="nofollow"><br /></a></p><p><a href="http://currency.ha.com/c/ref/questions.zx#Mule_Notes" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://currency.ha.com/c/ref/questions.zx#Mule_Notes" rel="nofollow">Heritage Auctions: Mule Note</a>[/QUOTE]</p><p><br /></p>

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