U.S. Commemorative Stamps
alphabetilately.org › commemsJan 27, 2006 · A "Commemorative Stamp" is one issued to honor a person or event. It is printed once, in relatively small quantities (typically 50 to 100 million in the U.S.), and withdrawn from sale (if not sold out) after a specified time, usually about a year. Or at least that's what it used to be - these days, with stamps for insects, aquariums, and ...