GMT-Master
1977 / 1978
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GMT-Master
Location
London - UK
Year
1977 / 1978
Metal
Stainless Steel
Reference
1675
Dial
Mk4 Matte Dial, "Pepsi Light"
Serial
51XXXXX
Style
Men's / Unisex
Bezel
24 Hour 'Pepsi'
Indexes
Luminous
Case
40mm
Bracelet
Oyster
Crystal
Plexiglass
Box & Paperwork
Oysterbar
Movement
Automatic Cal. 1570
Condition
Excellent
Original Mark 4 matte black dial
Original matte black dial with luminous markers, Mercedes hands and GMT arrow hand. This dial type is referred to as a Mark 4 (Mk4) dial and is in the correct range. The dial is signed “Swiss- T<25” referring to the original tritium luminous on the dial. The dial has not been touched and remains in excellent original condition.
Steel case with 24 hour "Pepsi light" bezel
GMT reference 1675 in stainless steel with rotating 24 bezel. The 5.1 million serial number in-between the lugs denotes the year of production to 1977/78 which is the end of the production run for this reference. The rotating bezel with original 24 hour insert we have named the “Pepsi Light” as it has naturally faded with the top half “Ghosted” to form a light blue/grey colour. This reference features a plexiglass crystal with “Cyclops” magnifying the date display and a Rolex Twinlock screw down crown. The case & bracelet are in excellent condition having been professionally polished during service.
Original Rolex Oyster Bracelet
Original Rolex Oyster bracelet reference 78360 with clasp code VB and 580 end links. Bracelets can be resized on request.
Released in 1954, the GMT-Master resulted from Pan Am and Rolex collaborating on a watch that could tell the time in two different places at once
With the further innovation and popularisation of commercial flying, the distances of flights became greater. This resulted in pilots crossing into different time zones more frequently. Thus, a need for uniformity across the industry was borne as potential issues could arise when communicating with ground teams in a different time zone to the pilots. To eliminate these errors, the aviation industry adopted a standard time-zone, Greenwich Mean Time. As such, the GMT-Master’s fourth hand, the 2nd-hour hand, was to stay on Greenwich Mean Time – which is where the name for the watch comes from.
