Rolex GMT ref. 6542 with COSC Timing Certificate

Additional images

Model: ,

Year of issue: 1957

Reference number: 6543

Serial number: 262xxx

Condition: hardly worn

Status: available

Dealer country: United States

Price in US $: On request

Watch details

An exceptional find for the vintage collector, it is truly rare to discover a 6542 GMT with a chronometer timing certificate. The watch has been serviced at Rolex and the dial and bezel have been replaced at service. 36mm. Stock 34709


Joshua Bonifas


The GMT-Master was developed to meet the specific needs of airline pilots. It became the official watch of several airlines, among them the famous Pan American World Airways, better known as Pan Am. Its most distinguishing visual feature was the two-tone bezel which marked daytime from nighttime hours.


As intercontinental travel developed in the 1950s, airliners began to fly swiftly across several successive time zones. For the first time it became important to know the time in various places in the world, simultaneously. It was the dawn of the jet age, and Rolex responded with a watch to match the spirit of the times.