The Rolex G.M.T. Master & G.M.T Master II
The Rolex GMT Master was first produced in 1954 and was named after Greenwich Mean Time, the world’s standard time. The first Rolex GMT Master was produced under reference number 6542. Rolex has always been known for specialty watches and the GMT Master was designed with pilots in mind. The first Rolex GMT Master was actually just a heavily modified version of the turn-o-graph. This allowed pilots to keep track of multiple time zones quick and easily thanks to the luminous Bakelite bezel insert. Unfortunately as useful as the bezel was, it would crack easily and it would eventually be replaced with a metal bezel in 1956.The bezel was marked with 24 hour markers and by a simple turn of the bezel, the pilot could keep track of the difference in time zones as they flew. For example if pilot was traveling from the east coast to central time zone they could move the dial over 2 hours and there was the correct time. When traveling through multiple time zones in a day it was important for the pilot to keep track of the correct time.
While useful for pilots the G.M.T. Master is still a favorite among Rolex collectors due to the combination of bezel colors. The most popular combinations being the “Pepsi” (blue and red), the “Batman” (black and blue), the “Root Beer” or ” Mocha” (brown and gold), & the “Coca Cola” (red and black).
Note from the Owner:
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Rolex G.M.T. Master
Rolex G.M.T. Master 6542
When it comes to GMT Master’s the most desirable is the ref. 6542, with the original Bakelite bezel. The 6542 is the very first Rolex G.M.T. Master ever produced. Designed for Pan-Am pilots, the GMT Master became the choice among pilots when it comes to two-timezone watches. What sets the 6542 apart from later versions of this model is the Bakelite bezel. The luminous numerals on the bezel are actually filled in with Radium. The problem however with the Bakelite bezels was they were very fragile and would later be replaced with a metal bezel. Because of this, the models that still have the original Bakelite bezel are highly sought after and bring a great premium. As these watches aged the bezel and dial faded to beautiful, even discoloration of both the dial and the bezel in a deep terracotta tone. When faded the color was similar to the Root Beer GMT Master,though some have more of a red tone in the dial.
Rolex G.M.T. Master 1675
The Rolex G.M.T. Master 1675 was the second model of G.M.T.s produced. This was the first model that included crown guards. It also featured the aluminum red & blue bezel giving this watch its’ nickname “The Pepsi”. This model was available in stainless steel, 2 tone stainless and 18k gold and all 18k gold versions. They were also available with your choice of oyster, jubilee or leather strap band styles. This model also had a new dial inscription that read “Superlative Chronometer Officially Certified.”
Caliber 1565 Automatic Movement 25 Jewel until 1964
Caliber 1567 Automatic Movement 25 jewel from 1964 to 1980
38mm Stainless Steel, Steel & 18K yellow gold, 18K Yellow Gold
Stainless Steel Oyster Band, 2 tone jubilee band or leather strap
Red & Blue Bezel, Black Dial, Mercedes Hands
50 Meters / 165 Feet
Rolex G.M.T. Master 16750
The Rolex GMT Master 16750 featured a new movement and glossy dials. Rolex started using the caliber 3075 movement, which featured a quick-set date. This model was in production till 1988 making it it a highly sought-after model of the GMT-Master series. While the 16750 looks almost exactly the same the changes where made on the inside of the watch. It has three specific technical upgrades when compared to the 1675. First, the model used of the new 3075 caliber, which runs at a higher beat of 28,800 bph. So, we have a gain in accuracy and a more robust and modern movement Additionally the 16750 added a quick set date function. Lastly Rolex upgraded the gasket employment and the 16750 was rated to 100M of water resistance compared to 50M on the 1675.
Rolex G.M.T. Master 16700
The Rolex G.M.T. Master II
The Rolex G.M.T. Master 16760
“The Fat Lady” or “Sophia Loren”
Caliber 3185 Automatic Movement 31 Jewel
Red & Black bezel “Coca Cola”, Black Bezel or Red and Blue Bezel “Pepsi”.
Rolex G.M.T. Master II 16710
Caliber 3185 Automatic Movement 31 Jewel
Red & Black bezel “Coca Cols”, Black Bezel or Red and Blue Bezel “Pepsi”.
Rolex G.M.T. Master II 116710
The Rolex G.M.T. Master II model 116710 is the current model for the G.M.T. Master II. When the 116710 was released it was available with two new bezels. The Black and Blue “The Batman” and the light and dark brown “Root Beer”. They of course kept the classic Blue and Red “Pepsi” the Red and Black “Coca Cola” and the simple all black version. Besides the changes to the bezel they also offered new case and band combinations. You could now get the G.M.T. Master II in 2 toned 18K gold and stainless as well as a full 18K gold version. These changes helped to fill the gap between the G.M.T. and the Submariner as far as options. While very similar in looks these 2 models had vastly different uses as one is designed for pilots (The G.M.T. II) and one designed for diving “The Submariner”. Before this model if you wanted a 2 toned Rolex sports model you were forced to get the Submariner.
Caliber 3186 Automatic Movement 31Jewel
Blue and Black “Batman” Red & Black bezel “Coca Cola”, Black Bezel light brown and dark brown “The Root Beer” or Red and Blue Bezel “Pepsi”.