PMG Grades Mismatched Serial Number Error on US $20 Bill

A woman who made a purchase at the January 2020 FUN Show got an unexpected bonus in her change: a $20 bill with a valuable error. She immediately submitted the note to Paper Money Guaranty® which confirmed that the 2013 $20 Federal Reserve Note (Boston) had an authentic—and quite rare—mismatched serial number error.



Certified Collectibles Group · Feb 12, 2020
Authentication U.S. Paper Money Announcements



SARASOTA, Fla. (Feb. 13, 2020) – A woman who made a purchase at the January 2020 Florida United Numismatists (FUN) Show in Orlando got an unexpected bonus in her change: a $20 bill with a valuable error. She immediately submitted the note to Paper Money Guaranty® (PMG®), which confirmed that the 2013 $20 Federal Reserve Note (Boston) had an authentic—and quite rare—mismatched serial number error.

A PMG-certified modern US note with this error is likely worth hundreds of dollars or more, resulting in a tidy profit for the woman who discovered it in her change. For instance, another 2013 $20 Federal Reserve Note — a Richmond example graded PMG 66 Gem Uncirculated EPQ — with a mismatched serial number error sold for $1,140 at a Heritage Auctions sale at the January 2020 FUN Show. Meanwhile, in the same sale, a 1977A $5 Federal Reserve Note (St. Louis) with the same error graded PMG 40 Extremely Fine EPQ realized $750.

"It was such a thrill to find a rare banknote in change right at the FUN Show," said Tammy Demars, a Texas resident who helps manage a Facebook group called Coins & Currency Live Auctions. "After I realized I had a potentially valuable note, I brought it directly to the PMG booth for confirmation."

Paper money collectors place a premium on these notes because quality control measures at the US Bureau of Engraving and Printing usually keep such errors from ever reaching circulation. Banknotes’ serial numbers are vital in helping to ensure the integrity of paper money.

The serial numbers on the note (MA54550151B and MA54545151B) differ in their middle two digits: 45 vs. 50. The serial numbers printed on a note are imparted by a pair of numbering wheels. When the serial numbers don’t match, it indicates something went wrong — such as one of the numbering wheels being temporarily stuck.

“This note is an excellent reminder that great numismatic discoveries can still be made simply by looking at our pocket change,” said Mark Salzberg, Chairman of PMG. “The condition of this note suggests that quite a few people unwittingly let a valuable rarity slip through their fingers.”

Collectors and dealers who have error notes can submit them to PMG for certification under the Economy Special grading tier or higher with the error noted under the Variety/Pedigree column. For more information about submitting to PMG, visit PMGnotes.com.

About Paper Money Guaranty® (PMG®)

Founded in 2005, PMG is the world’s largest and most trusted third-party paper money grading service, with nearly 5 million banknotes certified. PMG has established the industry’s highest standards of accuracy, consistency and integrity. Every note that PMG certifies is backed by the comprehensive PMG Guarantee of authenticity and grade, which gives buyers greater confidence. This results in higher prices realized and greater liquidity for PMG-certified notes. To learn more, visit PMGnotes.com

© 2020 Paper Money G uaranty. All rights reserved.

PMG, NGC, NCS, CGC, CCS, ASG, CAG and CCG are the registered trademarks or unregistered trademarks of Numismatic Guaranty Corporation of America, and/or its related companies in the United States and/or other countries. All other names and marks referenced in this release are the trade names, trademarks, or service marks of their respective owners.

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Certified Collectibles Group

The Certified Collectibles Group (CCG) is a set of independent third-party companies (NGC, NCS, PMG, CCG, CCS, ASG & CAG) focused on the expert authentication, grading and conservation of collectibles.

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