Night Friends American Bats Forever First Class Postage Stamps-10 sheets of 20

Bats, the only mammal capable of full-powered flight, are vital to controlling insect pests that annoy humans and threaten farm crops. A single bat can catch from 500 to 1000 insects such as mosquitos, moths, beetles, gnats, and crickets, in just one hour. Issued in time for Halloween invitations, these stamps were designed to promote the hobby during National Stamp Collecting Month.