This Block II Apollo Command and Service Module combination (CSM 105), manufactured by North American Rockwell, was originally used for vibration and acoustic tests. In 1973 it was refurbished for display at the Paris Air Show. The CSM was displayed docked to a Soviet Soyuz spacecraft, as was planned for the Apollo-Soyuz Test Program (ASTP) mission that took place in July 1975. The Soyuz spacecraft was made of residual test hardware. Highlighted in this image are the engines of the Apollo #105 Command and Service Modules ASTP.