Very nice Skylab communications cable. The production representative for flight application rubber-sheathed cable measures approximately 14´ long, with a locking blue connector at one end and a blue plug at the other end. A small alligator clip is affixed underneath the plug. This cable would interface between a crew member's Bio-belt and a console. The activation box has a transmit switch along the top, and has an identification label affixed to one side which reads, “Comm. Cable Assy. SEA-16101327-601, S/N 1001.” In fine condition. The transmit label has become detached from the switch, but is included. RR Auction COA.