An incredible piece of Apollo history. This Power and Servo Assembly (PSA) module, Serial No. 1, was flown on the last un-crewed test of the Block 1 command module, Flight 202, on August 25, 1966. It was part of the first Apollo guidance and navigation system to actually reach space! Now how cool is that?

There is a Yellow FLIGHT 202 stamp on the top side below the description. On one side is an inspector stamp and the famous NASA Flight Triangle Stamp. Condition is used and is exactly as I removed it from PSA Tray # 8 shortly before this listing. This module reads: Resolver Drive Amplifier part # 1007523- 011 REV   Serial # ACSK. 1.