Accompanied by three spare bracelet links.
The GMT-Master model was developped on request of Pan Am when the company started transatlantic flights with jet aircrafts in 1956. Travelers appreciated the fact that the journey times were reduced from 13 hours to 7 but suffered from a new phenomen, the jet lag. Pan Am was worried about the possible effects on its pilots and, after researches, advised them to keep on "home" time while away from base. As at the same time they needed to know the local time, a joint task force from Pan Am and Rolex was assigned. The team produced the "G.M.T. Master", named after the world's standard time, the Greenwich Mean Time.
The present watch is a transitional model between the old reference 6542 and the new ref. 1675 and features still the early black lacquered dial with the gilt printing instead of silvered.