Never hinged 1999 USPS American Kestrel 1 cent self-adhesive stamps - partial sheet, 40 count The 1999 American Kestrel stamp is a 1-cent definitive stamp issued by the USPS on November 19, 1999, in New York, NY. Part of the popular Flora and Fauna series, it features a vibrant illustration of the male kestrel—North America's smallest falcon. #stamps #birds #Kestrel #falcon #vintage