(January 3, 2011) The Indianapolis 500 will mark its centennial year on Memorial Day and among a slew of commemorative events in the pipeline for that landmark anniversary is the creation of a U.S. Postal Service stamp honoring the first 500 in 1911, set to go on sale in May.

It’s a United States Postal Service “forever” stamp, with its imagery of Ray Harroun’s winning Marmon Wasp of 1911 created in Art Deco fashion by John Mattos.

The 2011 issue will mark the second time that the Wasp has a appeared on a U.S. stamp, the first being as a 17.5-cent postal commemorative in 1987. It was part of a series on transportation.