OMEGA SPEEDMASTER GEMINI APOLLO SOYUZ''. Limited Edition Steel chronograph watch, round case, black 3-counter dial with baton hour markers and blue and red logo symbolizing the ''Apollo - Soyuz'' mission, enameled bezel with tachymeter scale. Screw-down caseback, caseback reference 145.022. Signed mechanical movement, numbered 32859678, calibre 861. Steel bracelet with adjustable steel folding clasp, signed. Circa 1975. Diameter: 42 mm. Additional synthetic fabric strap with steel buckle and loops. The Apollo - Soyuz mission marked the first aerospace collaboration between the United States and the Soviet Union. This version of the Speedmaster, which commemorated the historic meeting in orbit around the Earth between the Apollo spacecraft and the Soyuz capsule on July 17, 1975, was produced in just 500 pieces.