US 1967 5c Accomplishments in Space Stamps

Paul Calle drew one astronaut floating beside the Gemini 4 capsule and split the scene across two stamps, giving the Post Office its first attached pair with a continuous design. Collectors know them as the Space Twins. The artwork was based on photographs of Ed White's spacewalk, down to the gold-covered tether he used to pull himself around. Because the picture only works as a whole, this is a pair to keep joined rather than separate.