- A STAINLESS STEEL DUAL TIME WRISTWATCH WITH DATE AND LATER BEZEL
REF 6542 GMT-MASTER CIRCA 1958
- stainless steel
- diameter 38.5 mm, bracelet circumference approximately 178 mm
By 1953, The commercial trans-Atlantic airline industry was advanced and booming. Passengers took off on one side of the ocean, and arrived on the other in a matter of hours. During this golden age of commercial flight, Pan American Airlines approached Rolex to begin working on a dual time wristwatch appropriate for trans-Atlantic travel.
When Ref. 6542, the first GMT-Master, was released in 1954, it became the official timepiece of Pan-Am Airlines. Their pilots found the watch to be a useful tool in the cockpit where many timing calculations were necessary over the duration of the flight.