Rolex GMT Master 16700 40mm Auto QH403
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The Rolex GMT was designed as an aviator watch: 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. Altough Greenwich Mean Time (GMT) got replaced 1972 in the Aviation Industry by Coordinated Universal Time (UTC), the term GMT is still known and kept as part of the name of the GMT Master, altough Pilots nowadays use it to set UTC.
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 first GMT (Ref. 6542) was a regular Turn-O-Graph (Ref. 6202) with a different bezel and a modified movement.
(Source: GMT Master History)
Production Period: 1988-1999
Model Name: Rolex GMT Master
Caliber: 3175, 28800A/h, hacking, quickset (direct)
Pressure proof to 100m/330ft
Bracelet: Oyster 78360 and 78790 (Oysterlock starting 1989), Jubilé 62510
Glass: Sapphire crystal
Tritum up to U-Series 1997: T
Luminova starting 1998: Swiss dial (variant: Luminova on T
1988 the Ref. 16700 replaced the Ref. 16750. The Ref. 16700 was cheaper compared to the Ref. 16710 which got introduced at the same time.
The caliber 3175 (same functions as the 3075) had still the non-independant hourhand which was the main difference between the Ref. 16700 and the Ref. 16710.
New introduced with this watch:
White gold indexes (altough some predecessors (Ref. 16750) were also already equipped with these).
Date-wheel has vintage open numbers until 1992/1993.
Only available in Stainless Steel.
BLRO, Blue/Red aka Pepsi (bleu/rouge), (Bezel 315-16700-6)
LN, Black, (Bezel 315-16700-1)
very light marks on the case and bracelet. Lug bevels are very well defined. Very attractive presentation on your wrist
We consider this watch, as shown in the pictures, as EXCELLENT to NEAR MINT.
In-House Test Results**:
Bench-run for at least 24 hours. All watch functions tested and operable.
Observed timekeeping: performs within manufacturer specs
Bracelet Sizing: up to 7.75"
Last Service: Unknown
This watch has been certified authentic and checked against theft and loss databases by a 3rd party authentication service. An electronic copy can be issued to you upon request.
*This listing is for the watch shown in the photos. Photos are an essential part of the description. Grades are the provided listing text and pictures summarized into a simple-to-understand score.
**Timekeeping measured using a timegrapher with watch face up at full wind; use only as a baseline as wearing habits affect timekeeping. Unserviced watches are not tested for WR or PR unless stated otherwise. Bracelet size measured using a ruler or mandrel. A comfortable bracelet size may vary from your measured wrist size.