Longines - Master Collection Retrograde - L2.717.4 - Men - 2010-2020

Longines Master Collection Retrograde L2.717.4 – 44 mm – automatic – four retrograde complications – second time zone – day & date – silver guilloché dial

A technically exceptional Longines Master Collection Retrograde with a generous 44 mm stainless steel case and a characteristic silver-colored guilloché dial. This model stands out for four retrograde indications: day of the week, date, small seconds, and a second time zone with a 24-hour display.

The classic Roman numerals and blue-tinted hands give the watch the traditional look of the Master Collection, while the complex dial clearly shows that this is one of the more extensive mechanical models in the collection.

The automatic Longines caliber L698.2 is visible through the transparent back. The timegrapher measurement at the moment of testing shows an error of 0 seconds per day, with an amplitude of 302° and a beat error of 0.1 ms.

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Basic information

Brand: Longines
Collection: The Longines Master Collection
Model: Master Collection Retrograde
Reference: L2.717.4
Variant family: L2.717.4.71.x
Diameter: 44 mm
Case material: stainless steel
Dial: silver/white
Dial texture: guilloché
Indices: Roman numerals
Crystal: sapphire crystal
Movement: automatic mechanical
Caliber: Longines L698.2
Base movement: ETA A07 L21
Frequency: 28,800 semi-oscillations per hour
Jewels: 25
Power reserve: approx. 48 hours
Water resistance according to model specification: 3 bar / 30 meters
Case back: transparent sapphire crystal
Bracelet: dark brown leather strap with crocodile pattern
Clasp: Longines deployant clasp
Current wrist circumference: approx. 20–21 cm

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Important details

• 44 mm execution of the Master Collection Retrograde
• Automatic Longines caliber L698.2
• Four independent retrograde functions
• Retrograde day display
• Retrograde date display
• Retrograde small seconds
• Retrograde second time zone with 24-hour scale
• Silver-colored guilloché dial
• Roman hour markers
• Blued steel hands
• Sapphire crystal
• Transparent case back
• Original Longines-signed crown
• Longines deployant clasp
• Timegrapher: 0 s/d, 302°, 0.1 ms

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Estimated production period

Estimated production period: circa early to mid-2010s.

The L2.717.4 belongs to the Master Collection Retrograde generation of models Longines produced in various 41 and 44 mm variants. Without a clearly dated warranty card or additional serial number update, no exact individual year of manufacture is provided.

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Case

The round case is made of stainless steel and has a diameter of 44 mm. The case is largely high-gloss polished and features the long, gracefully shaped lugs that are characteristic of the classic Master Collection design.

The case size gives the watch a strong presence on the wrist, which suits the amount of information and complications on the dial.

On the case side are small integrated pushers that allow separate adjustment of different calendar and time zone functions.

The case is in nice used condition. On the polished surfaces there are light signs of use and fine hairlines, mainly in places that are normally touched during wear and operation.

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Dial

The silver-colored dial is a key visual component of this model. The central surface features a fine, repeating guilloché texture that shows clearly depending on light incidence.

Around the edge are black Roman numerals, combined with an outer minute scale.

Under the center is the LONGINES signature with the winged hourglass logo. Further, AUTOMATIC appears on the lower part of the dial and SWISS MADE at 6 o'clock.

Despite the many functions, the layout remains strongly symmetrical. Each complication has its own clearly defined scale.

The dial is in very neat condition.

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Hands

The watch is equipped with several blued steel hands. Because of the thermally blue-appearing finish, they can range from almost black to bright blue depending on light.

The central feuille-shaped hour and minute hands form a classic contrast with the silver dial.

In addition, the watch has four separate hands for the retrograde functions.

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Retrograde day display

At the top of the dial is the day display.

The scale runs in an arc from MON through WED and FRI to SUN. The separate blued hand moves across this scale during the week and jumps back to the start after reaching the end.

This is the first of the four retrograde functions.

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Retrograde date

On the right side of the dial is the date display.
The scale runs from 1 to 31 and is read by a separate blued hand. At the end of the cycle this hand returns to the start.

Thus there is no traditional date window, and the calendar function remains fully integrated into the dial design.

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Second time zone / 24-hour display

On the left side there is a retrograde 24-hour scale from 2 to 24 hours.
This function can be used to display a second time zone and makes the watch suitable for simultaneously tracking two different times.

This hand also works retrograde and returns to the starting position after reaching the end of its scale.

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Retrograde small seconds

At 6 o'clock there is the fourth retrograde indication.
This scale runs from 0 to 60 seconds. The small seconds hand moves along the arc-shaped scale and jumps back to the start after 60 seconds.

Thus the watch does not require a traditional running central seconds hand.

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Movement

Inside is the automatic Longines caliber L698.2.
This mechanical movement is based on the ETA A07 L21 platform and was specifically adapted for Longines' extended retrograde functions.

Caliber: Longines L698.2
Base: ETA A07 L21
Winding: automatic
Frequency: 28,800 semi-oscillations per hour / 4 Hz
Jewels: 25
Power reserve: approx. 48 hours
Functions: hours, minutes, retrograde small seconds, retrograde date, retrograde day, and retrograde second time zone / 24-hour display

The movement is visible through the transparent back.

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Timegrapher measurement

The performed measurement yields:
- Rate deviation: 0 seconds per day
- Amplitude: 302°
- Beat error: 0.1 ms
- Frequency: 28,800 semi-oscillations per hour
- Lift angle: 52°

These are very neat values for this measurement.

A timegrapher measurement is always a snapshot in one position and does not constitute a warranty for future accuracy, water resistance, or overall technical condition of the movement.

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Back

The case is equipped with a transparent back so the automatic movement remains visible.
The rotor is signed with:

Longines
L698.2

On the outer ring of the case back are, among other things, THE LONGINES MASTER COLLECTION, ALL STAINLESS STEEL, and SWISS MADE.

Through the sapphire glass the decorated rotor, balance wheel, and various finished movement components are visible.

The polished outer edge of the case back shows light signs of use and hairlines consistent with normal use.

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Crown and pushers

The large ridged crown is signed with LONGINES and the winged hourglass logo.
Next to the crown are discrete pushers integrated into the case flank for setting the various retrograde functions. This keeps the case lines relatively calm despite the extensive calendar and second time zone features.

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Bracelet

The watch is mounted on a dark brown to almost black leather strap with a crocodile pattern and contrasting light stitching.

The strap shows clear use. In particular on the inside there are strong signs of wear, discoloration, cracking, and dryness of the leather. Around several adjustment holes and bending points there are also clear signs of use.

The outside is still representative, but given the condition of the inside, replacing the strap may be desirable in the future.

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Clasp

A Longines deployant clasp in stainless steel is fitted.
The clasp is signed with the Longines signature and the winged hourglass logo. On the polished parts there are light to normal signs of wear and hairlines.

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Wrist size

In the current setting the strap measures about 20–21 cm.
Actual fit may vary slightly depending on the adjustment position used and the shape of the wrist.

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Condition

Case: good used condition with light hairlines and surface scratches
Bezel: good condition with light signs of wear
Dial: very good condition
Hands: good condition
Sapphire crystal: clear with no notable heavy damage
Case back: light signs of use on the polished outer ring
Movement: visually maintained and visible through the transparent back
Crown: good used condition
Pushers: present on the case flanks
Bracelet: clearly worn, with strong wear on the inside
Clasp: original Longines-signed, with light signs of wear

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Overall condition

A technically interesting 44 mm Longines Master Collection Retrograde with a very recognizable silver guilloché dial and four mechanical retrograde indications.

The combination of day, date, small seconds, and second time zone makes the L2.717.4 considerably more extensive than a traditional Master Collection. The blued hands, Roman numerals, and classic case shape keep the overall look clearly within the traditional Longines style.

The watch is in overall good used condition. The case and clasp show normal light signs of use, while the dial is very well cared for. The leather strap, however, shows clear wear and signs of use. The measured movement values during the performed timegrapher measurement are particularly neat, at 0 seconds per day, 302° amplitude, and 0.1 ms beat error.