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Inverted Jenny

Inverted Jenny
Country of production United States
Date of production May 10, 1918 (1918-05-10)
Depicts Curtiss JN-4
Nature of rarity Invert error
Number in existence 100
Face value 24 US¢
Estimated value US $977,500[1]

The Inverted Jenny (also known as an Upside Down Jenny, Jenny Invert) is a United States postage stamp first issued on May 10, 1918 in which the image of the Curtiss JN-4 airplane in the center of the design appears upside-down; it is probably the most famous error in American philately. Only one pane of 100 of the invert stamps was ever found, making this error one of the most prized in all philately. A single Inverted Jenny was sold at a Robert A. Siegel auction in November 2007 for US $977,500.[1] In December 2007 a mint never hinged example was sold for $825,000. The broker of the sale said the buyer was a Wall Street executive who had lost the auction the previous month.[2] A block of four inverted Jennys was sold at a Robert A. Siegel auction in October 2005 for US $2.7 million.[3] In the wake of the 2008 financial meltdown, prices fetched by Inverted Jennys have receded. Between January and September of 2014, five examples offered at auction sold for sums ranging from $126,000 through $575,100.[4]


  • Background 1
  • A famous stamp 2
  • A rare swap 3
  • 2006 find 4
  • 95th anniversary souvenir sheet 5
  • StampWants giveaway 6
  • See also 7
  • References and sources 8


During the 1910s, the United States Post Office had made a number of experimental trials of carrying mail by air. These were shown by the first stamp in the world to picture an airplane (captioned as "aeroplane carrying mail"), one of the U.S. Parcel Post stamps of 1912–13.[5] The Post Office finally decided to inaugurate regular service on May 15, 1918, flying between Washington, D.C., Philadelphia, and New York City. The Post Office set a controversial rate of 24 cents for the service, much higher than the 3 cents for first-class mail of the time, and decided to issue a new stamp just for this rate, patriotically printed in red and blue, and depicting a Curtiss Jenny JN-4HM, the biplane especially modified for shuttling the mail. The stamp’s designer, Clair Aubrey Houston, apparently troubled to procure a photograph of that modified model (produced by removing the second pilot seat from the JN-4HT to create space for mailbags, and by increasing the fuel capacity). As only six such aircraft existed, there was a 1623% chance that the very plane engraved on the stamp by Marcus Baldwin—Jenny #38262—would be chosen to launch the inaugural three-city airmail run; and, providentially, the plane on the stamp was indeed the first to depart on May 15, taking off from Washington at 11:47 A. M.[6]

The job of designing and printing the new stamp was carried out in a great rush; engraving only began on May 4, and stamp printing on May 10 (a Friday), in sheets of 100 (contrary to the usual practice of printing 400 at a time and cutting into 100-stamp panes). Since the stamp was printed in two colors, each sheet had to be placed into the flat-bed printing press twice, an error-prone process that had resulted in invert errors in stamps of 1869 and 1901, and at least three misprinted sheets were found during the production process and destroyed. It is believed that only one misprinted sheet of 100 stamps got through unnoticed, and stamp collectors have spent the ensuing years trying to find them all.

Many collectors long thought the blue plane portion was printed first, thus it was actually the red frames that were inverted. However, research by noted philatelic authors

  • Amick, George. The Inverted Jenny: Mystery, Money, Mania. Scott Pub Inc Co (May 1, 1987). ISBN 0-89487-089-0
  • Smithsonian Institution article on the Inverted Jenny on display at the National Postal Museum (archived version October 19, 2010)
  • "Yahoo News 'Jenny' Stamp on Ballet Is Likely a Fake" November 14, 2006 Date accessed: 2006-11-15 (Link dead as of 05:02, 15 January 2007 (UTC))
  • Roy, Ron. The Empty Envelope. Random House Children's Books, 2000.
  1. ^ a b c "The 1918 24¢ Inverted “Jenny”". Sale 946a.  
  2. ^ Weber, Paul J. (2007-12-27). "Rare 'Jenny' Stamp Sells for $825,000".  
  3. ^ "Inverted "Jenny" Plate Block Sells for $2.7 Million hammer!" (PDF). 2005-10-19. p. 32. Retrieved 2013-09-28. 
  4. ^ The New York Times, September 15, 2014, p. A13.
  5. ^ Postage Stamps of the United States First Issued in 1912
  6. ^ Trepel, Scott Rarity Revealed: The Benjamin K. Miller Collection (2006, Smithsonian National Postal Museum, Washington D. C. and The New York Public Library, New York, N. Y.), p. 155.
  7. ^ "USPS Unveils Inverted Jenny Stamp".  
  8. ^ a b Donald Sundman, The Jenny Invert Plate-Number Block [Kindle Edition], Mystic Stamp Company 2012, ASIN: B008MAOPUG
  9. ^ The Inverted Jenny
  10. ^ Siegel power search
  11. ^ a b The 1918 24¢ Inverted “Jenny” (Siegel Auction catalogue, Sale 1010A, June 18, 2011, p. 18: photographic reconstruction of the Inverted “Jenny” Sheet [six stamp-images missing])
  12. ^ a b 2002 Rarities of the World (Siegel Auction catalogue, Sale 846, May 18, 2002), p. 158.
  13. ^ "The Inverted Jenny".  
  14. ^ Ganz, Cheryl (2008-09-26). "24c Curtiss Jenny invert single".  
  15. ^ "'"$100,000 Reward for Missing 'Jennies. 2014-09-14. Retrieved 2014-11-12. 
  16. ^ Barron, James (4 June 2015). "Stuart Weitzman to Display Rare Stamp That Fulfilled Boyhood Dream". New York Times. Retrieved 4 June 2015. 
  17. ^ Schmid, Randolph E. (2005-05-25). "Rare and Costly Stamps to Go on Display". Washington Post. Retrieved 2006-08-08. 
  18. ^ "Expert stamps out hopes of rare postage find". 2006-12-04. Retrieved 2009-04-05. 
  19. ^ Zaloudek, Mark (2006-11-15). "'"Stamp with ballot may be a fake 'Jenny. Herald Tribune. Retrieved 2007-01-15. 
  20. ^ "Stamp used on Florida ballot a fake". Reuters. 2006-12-04. Retrieved 2007-01-15. 
  21. ^ "2013 New U.S. Stamp Issues".  
  22. ^ Rarest Stamp Error in U.S. History, Inverted Jenny, Flies Again
  23. ^
  24. ^ "Rarities of the World Sale 1075: Upright Jenny Souvenir Sheet". Auction catalog. Robert Siegal Auction Gallaries. 26 June 2014. Retrieved 16 January 2015. 
  25. ^ "Miss New Jersey to Present Giveaway of Rare $400,000 Stamp by at APS Ameristamp Expo". PR Newswire. 2008-12-17. Retrieved 2014-01-08. 

References and sources

See also

As covered in Linn's Stamp News, on January 12, 2008, (an online marketplace for stamps, now known as gave away an inverted Jenny, after a year-long promotion the company ran. This represented the most expensive stamp ever given away in any sort of promotion. The winner of the giveaway was John Shedlock, of California, and the stamp was presented to him by the then current Miss New Jersey, Amy Polumbo.[25]

StampWants giveaway

In addition to the 2.2 million sheets printed with the plane inverted, the Postal Service announced it also printed 100 "non-inverted Jenny" souvenir sheets, with the plane flying right side up. All sheets are individually wrapped in sealed envelopes to recreate the excitement of finding an inverted Jenny when opening the envelope and to avoid the possibility of discovering a corrected Jenny prior to purchase. Individuals purchasing one of the 100 non-inverted Jenny sheets find a congratulatory note inside the wrapping asking them to call a phone number to receive a certificate of acknowledgement signed by Postmaster General Patrick Donahoe.[23] A non-inverted sheet purchased by Gail and David Robinson of Richmond, Virginia was sold in June 2014 by Siegel Auctions "Rarities of the World" for $51,750, with the 15% buyer's premium.[24]

On September 22, 2013 the United States Postal Service issued a souvenir sheet illustrating six examples of the inverted stamp denominated $2 instead of the original 24 cents.[21] The sheets were sold at face value, $12 (the issue was only sold as souvenir sheets of six, and not as individual $2 stamps). Various special packagings for collectors were also offered for a premium.[22]

95th anniversary souvenir sheet

[20] In November 2006, election workers in

The forgery on cover

2006 find

At an auction of the Green estate in 1944, the unique plate number block of eight stamps was sold for $27,000 to the collector Amos Eno, who had four stamps removed from it. The reduced block fetched only $18,250 when Eno’s estate was sold off ten years later. By 1971, however, its price had risen to $150,000.[8] Eventually, in late October 2005 this plate number block of four stamps was purchased by a then anonymous buyer for $2,970,000. The purchaser was revealed to be U.S. financier Bill Gross. Shortly after purchasing the Inverted Jennys he proceeded to trade them with Donald Sundman, president of the Mystic Stamp Company, a stamp dealer, for one of only two known examples of the USA 1c Z Grill. By completing this trade, Gross became the owner of the only complete collection of U.S. 19th century stamps.[17]

The Inverted Jenny plate block of four (note that the blue plate number is inverted as well). As of June 2015, it was owned by shoe designer and collector Stuart Weitzman.[16]

A rare swap

[11] In 2014, the mass media renewed long-dormant public attention to the 1955 theft of an even more spectacular Jenny specimen. This was a block of four (positions 65, 66, 75, 76) with a vertical red guide-line through its center, owned by the collector

Aside from having the biplane printed upside down, the inverted Jenny has become famous for other reasons as well. Benjamin Kurtz Miller, one of the early buyers of these inverts, 10 in all, bought the stamp for $250. Miller's inverted Jenny, position 18 on the sheet, was stolen in 1977 but was recovered in the early 1980s though, unfortunately, the top perforations had been cut off to prevent it from being recognized as the stolen Miller stamp. This mutilation made the stamp appear as if it had come from the top row of the sheet, and Klein's numbering on the back was accordingly tampered with to disguise the stamp as position 9—an astute piece of misdirection founded in the knowledge that position 9 had never appeared on the market: in fact, the real position 9 emerged decades later as the locket copy.[13][12](A genuine straight-edged copy would have cost Miller only $175.) However, that stolen and missing stamp served to drive the value of the other 99 examples even higher. That inverted Jenny was the main attraction in the Smithsonian National Postal Museum's 'Rarity Revealed' exhibition, 2007–2009. The "Inverted Jenny" was the most requested postage stamp for viewing by visitors at the museum.[14]

Benjamin K. Miller, whose inverted Jenny stamp was stolen in 1977

A famous stamp

The philatelic literature has long stated that seven of the stamps have been lost or destroyed through theft or mishandling. However, this statement is inaccurate. In 2007, a copy came to light that had not been seen since Eugene Klein broke up the sheet, and was offered for auction that June. The number of lost stamps then became six. Several others have been damaged, including one that was sucked into a vacuum cleaner. Apparently Green's wife mailed one which, while recovered, is the only cancelled sample. Indeed, no Jenny invert is in pristine condition, because Klein lightly penciled a number on the back of each stamp (from 1 through 10 in the top row to 91 through 100 in the bottom row) so that its original position on the sheet could be identified.[9][10]Only five examples survive, in fact, in NH (never hinged) condition.[11]One of these is the locket copy, which, however has another condition problem: a corner crease at the bottom right probably inflicted while it was being enclosed behind glass.[12]

Klein advised Green that the stamps would be worth more separately than as a single sheet, and Green went along. He donated one invert to the Red Cross in support of its war efforts (which was auctioned off for $300), while retaining forty-one of the stamps in his own collection, including the plate-number block (initially eight stamps) and several blocks of four.[8] The remainder of the inverts were sold off at steadily increasing prices through Klein, who kept a block of four for himself.[1] Green had one copy placed in a locket for his wife. This gold and glass locket displayed the inverted Jenny on one side, and a "regular" Jenny stamp on the other. This locket was offered for sale for the first time by the Siegel Auction Galleries Rarity Sale, held on May 18, 2002. It did not sell in the auction, but the philatelic press reported that a Private Treaty sale was arranged later for an unknown price.

Additional details of the day's events are not entirely certain—Robey gave three different accounts later—but he began to contact both stamp dealers and journalists, to tell them of his find. After a week that included visits from postal inspectors who tried to buy it back, and the hiding of the sheet under his mattress, Robey sold the sheet to noted Philadelphia dealer Eugene Klein for US$15,000. Klein placed an advertisement on the first page of the May 25, 1918 "Mekeel’s Weekly Stamp News" offering to sell copies of the invert ($250 for fully perforated examples, $175 for stamps with one straight edge), but announced in his following week’s ad that the entire sheet had been purchased by an individual collector. The buyer, who paid US$20,000, was "Colonel" H. R. Green, son of Hetty Green.

Initial deliveries went to post offices on Monday, May 13. Aware of the potential for inverts, a number of collectors went to their local post offices to buy the new stamps and keep an eye out for errors. Collector William T. Robey was one of those; he had written to a friend on May 10 mentioning that "it would pay to be on the lookout for inverts". On May 14, Robey went to the post office to buy the new stamps, and as he wrote later, when the clerk brought out a sheet of inverts, "my heart stood still". He paid for the sheet, and asked to see more, but the remainder of the sheets were normal.


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