The oxidizer valve assembly is intact but part of the fuel valve assembly was removed for failure analysis. A group of 16 of these bi-propellant engines made up the Gemini spacecraft Orbit Attitude and Maneuver System (OAMS). The engines provided attitude and maneuvering control after the spacecraft separated from the launch vehicle. The engines were mounted in fixed positions throughout the spacecraft. Pitch, roll, and yaw spacecraft torques were obtained by firing these 25 pound thrust engines in pairs. SIGNED BY GORDON COOPER AND CHARLES CONRAD on the right side engine casing: "Gordon Cooper, GT-5 CDR" and "Charles Conrad, GT 5 & GT 11". " /> Gemini spacecraft rocket engine, model SE-6. <I>Approx. 10 in. long and 3.5 in. wide at the left side mounting bracket with identification label: "Part Name - Thrust Chamber Assy [assembly], MFD [manufactured] by Rocketdyne for McDonnell, Part No. 208915-61, Mod [model] No. SE-6, Ser [serial number] 4071679, and McDonnell Part No. SCD52-2700-275". Other identification marks on the engine are: "Assembly Date 2Q [quarter] 65 [1965]," and numerous inspection stamps. A red Rocketdyne cover is used to protect the engine nozzle. Autographed by the crew of Gemini 5.</I> The oxidizer valve assembly is intact but part of the fuel valve assembly was removed for failure analysis. A group of 16 of these bi-propellant engines made up the Gemini spacecraft Orbit Attitude and Maneuver System (OAMS). The engines provided attitude and maneuvering control after the spacecraft separated from the launch vehicle. The engines were mounted in fixed positions throughout the spacecraft. Pitch, roll, and yaw spacecraft torques were obtained by firing these 25 pound thrust engines in pairs. SIGNED BY GORDON COOPER AND CHARLES CONRAD on the right side engine casing: "Gordon Cooper, GT-5 CDR" and "Charles Conrad, GT 5 & GT 11". | Christie's