Endangered Species Collectible Sheet of Fifteen 32 Cent Stamps Scott 3105 By USPS New sheet of (15) stamps (catalog #3105) no longer sold by USPS. Features 15 images of endangered species: caribou, manatee, ocelot, parrot & more Perfect gift for fans of animals, nature, environment Mother's Day Gift item. Makes for attractive & unique mothers day gift. High quality item professionally packaged in a white Stay Flat envelope.