Case size: 40 mm
Material: steel
Movement: automatic, caliber 3175
Year: circa 1999
Crystal: sapphire crystal
Bracelet: Oyster bracelet, folding clasp, ref. 78790-X4/501B
Reference number: 16700
Serial number: A'406'293
Movement number: 3 8'095'910
Case number: 16700
The movement is running at the time of cataloging. Please note that the movement has not been tested for timekeeping accuracy and may need a service at the buyer's expense. Watches have been opened to examine movements therefore no warranties are made that the watches are water-resistant. Potential buyers should inspect each watch to satisfy themselves as to condition.
For more information, please read our Conditions of Purchase.
More information
The Rolex GMT Master was developed in cooperation with Pan Am. As in the 1940s and 50s flying distances got longer and the pilots travelled through multiple time zones, Pan Am asked Rolex in the 1950s to develop a watch which could tell different times simultaneously.
The watch was designed as an aviator watch and the newly introduced fourth hand allowed the display of an additional time, with the corresponding numbermarkings on the outer bezel. Pilots used the second time to display the Greenwich Mean Time (GMT), which led to the name Rolex GMT-Master.
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