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<p>[QUOTE=&quot;clembo, post: 347205, member: 8033&quot;]Can get confusing so let&#039;s go micro and macro first.</p><p><br /></p><p>I&#039;m using the modern $1 note as an example here for ease. A micro number is 1.0 mm. On a back plate this is the size used at the Washington D.C. printing facility.</p><p>A macro number is 1.2 mm. On a back plate this is the size used at the Fort Worth printing facility.</p><p><br /></p><p>Look at some singles. If you just see a front plate number with no inititials it was printed in Washington D.C. If there is an FW in front it was printed in Fort Worth. Now look at the back plate numbers. You&#039;ll notice the FW note back plate number is noticeably larger as it is the macro.</p><p><br /></p><p>IF the Fort Worth note has a micro number it would be considered a mule (or to further confuse you may be listed as an engraving error). This DID happen with the 1995 series with back plate number 295 hence Fort Worth 295 errors.</p><p><br /></p><p><br /></p><p>Front and back plates are not required to be the same. They are basically a cross reference to the master plate number.</p><p><br /></p><p>A good currency book will point out numbers to look for as mules. Bear in mind in some series mules are just as, if not more common, than non mules. Mules were a lot more common in older small sized currency than they are tody.</p><p><br /></p><p>Isn&#039;t this fun? Hope that explains it to you.</p><p><br /></p><p>clembo[/QUOTE]</p><p><br /></p>

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