Roy's Postcards: 1984/10/27
The most celebrated rarity among U.S. postal issues is the 24 cent air mail stamp with inverted center. Shown approximately four times actual size is one of the original sheet of 100 stamps purchased by a collector on May 14, 1918 at the Washington, D.C. Post Office.
I briefly entertained a fantasy that some time after I put all these postcards up, someone would email me and let me know that the stamps used on one of the postcards were incredibly valuable misprints. It doesn't seem likely though.
See also: dc
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