Longines - Master Collection GMT / World Time - L2.631.4 - Men - 2000-2010

Longines Master Collection GMT / World Time L2.631.4 – 38.5 mm – automatic – GMT / world time – silver guilloché dial – caliber L635.6

A characteristic Longines Master Collection GMT / World Time with a classic case diameter of 38.5 mm. This model combines the traditional look of the Master Collection with an extended travel function: in addition to the normal time and date, the watch features a 24-hour ring and a world city ring allowing reading of different time zones.

The silver-colored guilloché dial is executed with black Arabic numerals and blued feuille hands. Around the actual dial are the contrasting 24-hour ring and the ring with international cities, including London, Paris, Cairo, Dubai, Hong Kong, Tokyo, Sydney, New York and Rio de Janeiro.

The automatic Longines caliber L635.6 is visible through the transparent case back. The watch comes with a dark brown Longines leather strap with crocodile texture and an original Longines deployant clasp.

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Basic information

Brand: Longines
Collection: The Longines Master Collection
Model: GMT / World Time
Reference: L2.631.4
Execution: silver-colored dial / brown leather strap
Case diameter: 38.5 mm
Case material: stainless steel
Dial: silver-colored guilloché
Movement: automatic
Caliber: Longines L635.6
Frequency: 28,800 alt/hour
Number of jewels: 33
Power reserve: approximately 38 hours
Functions: hours, minutes, central second, date, second time zone / GMT and world time indication
Glass: sapphire crystal
Back: transparent
Water resistance according to model specification: 3 bar / 30 meters
Lug width: 20 mm
Band: Longines leather with crocodile texture
Clasp: Longines deployant clasp
Origin: Switzerland

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Important details

• Desired GMT / World Time version from the Master Collection
• 38.5 mm stainless steel case
• Silver-colored finely structured guilloché dial
• Black Arabic hour numerals
• Blued feuille hands
• Central second hand
• Date window at 3 o’clock
• Contrasting 24-hour ring
• World cities ring for international time zones
• Automatic Longines caliber L635.6
• Transparent case back
• Dark brown Longines leather strap
• Original Longines deployant clasp
• Timegrapher measurement available

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Estimated year of manufacture

Estimated production period: circa 2005–2010.

Reference L2.631.4 belongs to the earlier generation of the Longines Master Collection. Exemplars of this reference have been documented around the mid-2000s and the model remained in production for several years thereafter.

An exact individual production year cannot be determined without accompanying dated documentation.

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Case

The round case is made of stainless steel and has a diameter of 38.5 mm excluding the crown.

The case is largely high-gloss polished and features the classic long, lightly curved lugs that are characteristic of this generation of the Master Collection.

The polished surfaces show light hairlines and normal superficial signs of wear. The overall presentation of the case is well-kept and there are no noticeable heavy damages or large dents.

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Dial

The silver-colored dial has a very fine, repeating guilloché pattern that provides a lot of depth.

Time is displayed with large black Arabic numerals. The classic typography corresponds to the traditional design of the Master Collection.

Below 12 o’clock:
LONGINES
winged hourglass logo

Above 6 o’clock:
AUTOMATIC
GMT

At the bottom: SWISS MADE.

The actual time display is surrounded by a detailed minute and second scale.

The dial is in very neat condition.

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Hands

The watch is equipped with classic blued steel feuille hands for hours and minutes.
Depending on the light, these visually range from almost black to bright blue, which nicely contrasts with the light guilloché dial.

Additionally there is a slender central second hand.

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GMT and world time function

The special element of this version is the combination of GMT and world time indication.

Around the central dial there is a 24-hour ring with the numbers 1 to 24. Around it lies a broad ring with place names representing different international time zones.

Included are, among others:
London
Paris
Cairo
Riyadh
Dubai
Karachi
Moscow
Dacca
Bangkok
Beijing
Hong Kong
Tokyo
Sydney
Noumea
Auckland
Samoa
Hawaii
Anchorage
Los Angeles
Denver
Mexico
New York
Santiago de Chile
Rio de Janeiro
Azores

Through the combination of the 24-hour indication and the cities ring, the watch can be used to read off different international time zones.
This makes the L2.631.4 one of the more distinctive travel complications within the classic Master Collection.

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Date

At 3 o’clock there is a clearly framed date window.
The date is displayed with black numerals on a light background.

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Movement

The watch is powered by the automatic Longines caliber L635.6.
Type: mechanical automatic
Caliber: Longines L635.6
Jewels: 33
Frequency: 28,800 alt/hour
Power reserve: approximately 38 hours
Functions: hours, minutes, central second, date and GMT / world time function

The movement features a decorated rotor with gold-colored inscriptions:
LONGINES
L635.6
SWISS

The rotor and various visible movement parts are decoratively finished.

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Timegrapher measurement

During the performed measurement the following values were recorded:
Rate deviation: +8 seconds per day
Amplitude: 351°
Beat error: 0.0 ms
Lift angle: 52.0°
Frequency: 28,800 alt/hour

The measurement is a momentary snapshot in the measured position and does not constitute a guarantee for future accuracy or full technical condition of the movement.

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Case back

The case back is transparent, allowing the automatic movement and the decorated rotor to be seen.
Around the sapphire crystal are, among other things, the characteristic Master Collection markings engraved.
The polished metal rim shows light superficial signs of wear consistent with normal use.

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Crown

The knurled crown carries the Longines inscription and the winged hourglass logo.
The crown’s finish nicely matches the highly polished case.

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Band

Equipped with a dark brown Longines leather strap with crocodile structure and light contrast stitching.
On the inside, among other markings, are:
LONGINES
ALLIGATOR VERITABLE
20
The strap is 20 mm wide at the case.
The leather band shows clear normal signs of use, including creasing and impressions around the used adjustment holes. The stitching and edges also show light signs of wear.

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Clasp

The band comes with an original Longines stainless steel deployant clasp.
The clasp is stamped with LONGINES and the winged hourglass logo.
The polished parts show light scratches and hairlines, consistent with normal use.

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Wrist fit

In the current setting, the watch is suitable for a wrist circumference of about 20–21 cm.
The fit can be further adjusted thanks to the different holes in the leather band.

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Condition

Case: well-kept used condition with light hairlines and superficial signs of wear.
Dial: very neat condition, with the guilloché pattern and the printing beautifully preserved.
Glass: clear and without noticeable heavy damage.
Crown: signed Longines crown in neat used condition.
Back: transparent back with light signs of wear on the polished metal rim.
Movement: automatic Longines L635.6, measured at +8 seconds per day with 351° amplitude and 0.0 ms beat error.
Band: original Longines leather strap with visible signs of wear and creasing.
Clasp: original Longines deployant clasp with light surface scratches.

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Overall condition

A well-kept example of the Longines Master Collection GMT / World Time L2.631.4 in the classic 38.5 mm version. The combination of the silver guilloché dial, black Arabic numerals, blued feuille hands, date, 24-hour ring and extensive world cities ring gives this model a distinctly recognizable look.

The case and clasp show light signs of use, while the dial, in particular, presents very neatly. The dark brown Longines leather strap is clearly worn but, in terms of color and the classic crocodile texture, is a fitting match for the watch. The automatic L635.6 movement remains visible through the transparent case back.