

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 Post Office finally decided to inaugurate regular service on May 15, 1918, flying between Washington, D.C., Philadelphia, and New York City. These were shown by the first stamp in the world to picture an airplane (captioned as "aeroplane carrying mail"), one of the U.S.

In the wake of the 2008 financial meltdown, prices fetched by Inverted Jennys receded.

Siegel auction in October 2005 for $2.7 million. A block of four Inverted Jennys was sold at a Robert A. The broker of the sale said the buyer was a Wall Street executive who had lost the auction the previous month. In December 2007 a mint never hinged example was sold for $825,000. Siegel auction in November 2007 for $977,500. Only one pane of 100 of the invert stamps was ever found, making this error one of the most prized in philately.Ī single Inverted Jenny was sold at a Robert A. The Inverted Jenny (also known as an Upside Down Jenny, Jenny Invert) is a 24 cent 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 is printed upside-down it is one of the most famous error in American philately. American postage stamp with design error Inverted Jenny
