The Postal Service issued the nondenominated Wavy Flag definitive stamp (37-cent value) on June 7, 2002, in Washington, DC. The stamp, designed and illustrated by Terrence W. McCaffrey, US Postal Service, Washington, DC, features the stars and stripes of "Old Glory."
The stamp was available in multiple formats (panes, coils, and booklets; self-stick and water-activated adhesives; offset and gravure printing methods) produced by six different printing firms. Collectors have identified six major varieties.
Postal Bulletin (May 16, 2002)