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: besides the normal time and date, the watch features a 24-hour ring and a world time cities 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 is equipped with a dark brown Longines leather strap with alligator texture and an original Longines folding clasp.

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Basic information

Brand: Longines
Collection: The Longines Master Collection
Model: GMT / World Time
Reference: L2.631.4
Specification: 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 alternations per hour
Number of jewels: 33
Power reserve: approx. 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
Strap: Longines leather with alligator texture
Clasp: Longines folding clasp
Origin: Switzerland

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Important details

• Desired GMT / World Time edition from the Master Collection
• 38.5 mm stainless steel case
• Silver-colored finely structured guilloché dial
• Black Arabic numerals
• Blued feuille hands
• Central seconds 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 folding 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. Examples of this reference have been documented around the mid-2000s, and the model remained available for several years thereafter.

An exact individual 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 predominantly high-gloss polished and features the classic long, slightly 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 maintained and there are no noticeable major damages or large dents.

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Dial

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

Time is indicated with large black Arabic numerals. The classic typography matches the traditional design of the Master Collection.

Below 12 o’clock:

LONGINES
flying sand watch 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 a 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, they visually range from almost black to bright blue, which nicely contrasts with the light guilloché dial.

In addition, there is a slim central seconds hand.

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GMT and world time function

The special feature of this edition is the combination of GMT and world time indication.

Around the central dial there is a 24-hour ring with numbers 1 through 24. Around this sits a wide ring with place names representing various international time zones.

Among others, the following are listed:

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 classical Master Collection.

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Date

At 3 o’clock is a clearly framed date window.

The date is shown 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 alternations per hour
Power reserve: approx. 38 hours
Functions: hours, minutes, central second, date and GMT / world time function

The movement features a decorated rotor with gold-colored engravings:

LONGINES
L635.6
SWISS

The rotor and various visible movement components 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 alternations per hour

The measurement is a momentary snapshot in the measured position and does not constitute a guarantee of 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 visible.
Around the sapphire crystal are, among other things, the characteristic Master Collection engravings.
The polished metal rim shows light superficial signs of wear consistent with normal use.

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Crown

The knurled crown is engraved with the Longines inscription and the winged hourglass logo.
The crown finishes well with the highly polished case.

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Band

Equipped with a dark brown Longines leather strap with alligator texture and light contrast stitching.
On the inside are the following markings:

LONGINES
ALLIGATOR VERITABLE
20

The strap is 20 mm wide at the case.

The leather strap shows clear normal signs of wear, 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 is equipped with an original Longines stainless steel folding clasp.
The clasp is branded with LONGINES and the winged hourglass logo.
On the polished parts there are light scratches and hairlines, consistent with normal use.

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Wrist size

In the current setting the watch fits a wrist circumference of approximately 20–21 cm.
Through the various holes in the leather strap, the fit can be further adjusted.

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Condition

Case: neat used condition with light hairlines and superficial signs of wear.
Dial: very neat condition, with the guilloché pattern and the printing nicely preserved.
Glass: clear and without noticeable heavy damage.
Crown: branded 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 folding clasp with light surface scratches.

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Overall condition

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

The case and clasp show light signs of wear, while the dial presents itself especially neatly. The dark brown Longines leather strap has clearly been worn, but its color and classic alligator texture form a fitting match with the watch. The automatic L635.6 movement remains visible through the transparent case back.