A transit case for a KL-7 cipher machine. The case has a metal plate on the lid that reads: 'National Security Agency Carrying Case CE 80754'. The serial number that follows is illegible. In the lid, there are sections to stow a power cable, work light and a spare ink ribbon. There is red paint over the original green paint which may have been added to repurpose the case for a civilian use, possibly as a tool box.