Carrying Case for Master Navigational GCT Watch AN-5740 North American Aviation This instrument is in reasonable

This instrument is in reasonable condition for its age

The clock mechanism does not appear to run its full setting

This example has the pneumatic connection attached

evidence of a year of manufacturing of 1943

They include procedures

Carrying Case for Master Navigational GCT Watch AN-5740 North American Aviation This instrument is in reasonableThis is an authentic WWII era Carrying Case made specifically to protect the Master Navigational GCT Watch used by navigators of aircraft such as bombers and transports of the US Army Air Corps and US Army Air Force. (Watch is not included). The primary purpose of the Carrying Case was to protect the Master Navigational GCT (Greenwich Civil Time) Watch, whose accuracy was critical during aircraft navigation. The case opens by gently lifting the