USPS 2007 Polar Lights Sheet of Twenty 41 Cent Stamps Scott 4203-04 New sheet of (20) stamps (catalog #s 4203-4) no longer sold by USPS. Plate #/position varies. Features images of Aurora Borealis and Aurora Australis Perfect gift for fans of science, outer space, astronomy Great for raffles, conference giveaways, fan clubs, fundraisers, souvenirs. Collectors item. High quality item professionally packaged in a white Stay Flat envelope.