The stamp was red and blue, and on one sheet the blue was printed ... He told Braver his aim had been to collect a copy of every single stamp that the U.S. put out during the 19th century.

As NPR reported eight years ago when another "inverted Jenny" hit the auction block, the red and blue stamps ... of the stamps — along with a Stradivarius violin and an original copy of the ...

Issued on May 10, 1918, the red and blue stamp accidentally shows ... By comparison, an unused, regular copy of the corrected Jenny stamp is worth something less than $100 in today's market.

The famous red, white and blue "Inverted Jenny" stamp dates back to 1918 and originally ... other priceless American artefacts, including a copy of the Declaration of Independence.