American Advances in Aviation Collectible Sheet of Twenty 37 Cent Stamps Scott 3916-25 By USPS New full sheet of (20) stamps (catalog #s 3916-25) no longer sold by USPS. Plate #/position varies. Features 20 images of aircraft in flight Perfect gift for veterans, Air Force, pilots Great for raffles, conference giveaways, fan clubs, fundraisers, souvenirs. Collectors item. High quality item professionally packaged