One of the most famously flawed stamps in U.S. history sold for $825,000 to a New York man who bought it slightly cheaper than the record price another "Inverted Jenny" copy fetched at auction last month. The 1918 "Inverted Jenny" stamp is a misprint featuring an upside-down biplane. The rare 1918 24-cent stamp, depicting an upside-down Curtis JN-4 biplane known as "Jenny," was sold privately this week to a Wall Street executive who did not want to be identified. Heritage Auction Galleries president Greg Rohan, who brokered the sale, said the buyer is the same collector who lost an auction last month in which another "Inverted Jenny" sold for $977,500.