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<p>[QUOTE=&quot;clayirving, post: 1328520, member: 18867&quot;]A radar is a &quot;reflection&quot; of the first four digits of the serial number like the note below:</p><p><br /></p><p><img src="http://www.panix.com/~clay/currency/radar.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>The first four digits bounce back like a radar pulse in the next four digits: 5590 0955</p><p><br /></p><p>Some people call this type of serial number a &quot;quad radar&quot;.</p><p><br /></p><p>People get real creative with serial numbers, though. Some may call your note a &quot;triple radar&quot; (only three digits are reflected), &quot;partial radar&quot;, or &quot;mini radar&quot;. I&#039;ve even seen someone describe this note as a &quot;split radar&quot;:</p><p><br /></p><p><img src="http://www.panix.com/~clay/currency/split-radar.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>I&#039;ve seen two notes described as &quot;mirror image radars&quot;:</p><p><br /></p><p><img src="http://www.panix.com/~clay/currency/mirror-radar.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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