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 handset 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 extensive travel function: in addition to the normal time and date, the watch features a 24-hour ring and a world cities ring from which various time zones can be read.

The silver-colored guilloché dial is executed with black Arabic numerals and blued feuille hands. Around the actual dial lie 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 fitted with a dark brown Longines leather strap with alligator 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
Specification: silver-colored dial / brown leather strap
Case diameter: 38.5 mm
Case material: stainless steel
Dial: silver guilloché
Movement: automatic
Caliber: Longines L635.6
Frequency: 28,800 alt/hour
Jewels: 33
Power reserve: about 38 hours
Functions: hours, minutes, central second, date, second time zone / GMT and world time indication
Crystal: sapphire crystal
Case back: transparent
Water resistance according to model specification: 3 bar / 30 meters
Lug width: 20 mm
Strap: Longines leather with alligator 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 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 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 an early generation of the Longines Master Collection. Examples 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 dated accompanying 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, lightly curved lugs that are characteristic for 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 notable 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 matches the traditional design of the Master Collection.

Below 12 o’clock is:
LONGINES
winged hourglass logo

Above 6 o’clock is:
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, these visually range from nearly black to bright blue, which nicely contrast with the light guilloché dial.

Additionally there is a slim central seconds hand.

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GMT and world time function

The special element 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 to 24. Surrounding this is a broad 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 different international time zones.
This makes the L2.631.4 one of the more pronounced 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: about 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 several 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 snapshot in the measured position and does not constitute a warranty for future accuracy or the complete technical condition of the movement.

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Case back

The case is fitted with a transparent back, 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 fitting normal use.

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Crown

The grooved crown is bearing the Longines inscription and the winged hourglass logo.
The crown’s finish closely matches the highly polished case.

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Band

Mounted is 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 strap edges also show light signs of wear.

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Clasp

The strap is fitted with an original Longines stainless steel deployant 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 is suitable for a wrist circumference of approximately 20–21 cm.
The fit can be further adjusted by the different holes in the leather strap.

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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 beautifully preserved.
Crystal: clear and without notable heavy damage.
Crown: branded Longines crown in neat used condition.
Case 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 variant. The combination of the silver guilloché dial, black Arabic numerals, blued feuille hands, date, 24-hour ring and the extensive world cities ring gives this model a particularly recognizable appearance.

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