This is an extremely uncommon and original Tissot 24-hour World Time automatic known as the “Navigator.” This watch was re-introduced a few years ago as a new re-edition. This example from the 1950s has an original dial having fine patina, original world-time disk and handset. When the 2:00 button is depressed once, the user can rotate the inner disk to coincide with their home time. The original bezel and steel 36x44mm beefy lug case look excellent for the age of the watch. The in-house caliber 28.5N-21T 17-jewel bumper automatic movement is accurate and working perfectly. These are extremely hard to find in all-original condition.