Auction Name: 2026 March 21 Space Exploration Showcase Auction

Lot Number: 71043

Shortcut to Lot: HA.com/33172*71043

United States Space Program: Commemorative Stamp Sheets, Including Signed Project Mercury and Apollo-Soyuz Test Project Issues. An impressive group of large-format United States commemorative postage stamp sheets celebrating the early American manned space program and the historic Apollo-Soyuz Test Project. One Apollo-Soyuz example has been signed by both the U.S. and Soviet Crews on the left margin. Two of the project Mercury sheets have been individually signed by Scott Carpenter and Alan Shepard. Some toning to sheets, overall fine.

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