Longines Master Collection Master Collection 40 Chronograph Calendar Stainless Steel / Silver / Alligator

Reference L2.673.4.78.3

About this watch

The Longines Master Collection 40 Chronograph Calendar is a masterpiece that exudes sophistication and functionality. With its refined design and intricate movements, it's a watch that not only tells time but tells a story. The 40mm stainless steel case boasts a polished finish that catches the light in all the right ways, while the silver guilloche dial provides a stunning backdrop for the watch's features. The addition of the moonphase indicator adds an astronomical touch, allowing you to track the lunar cycle—a perfect blend of beauty and functionality. At the heart of this timepiece is the Longines caliber L678.2, a self-winding movement based on the ETA/Valjoux 7751, with 25 jewels and a frequency of 28,800 vibrations per hour. The 42-hour power reserve means you can take the watch off for a day or two and still have it running when you put it back on. With an additional 24-hour hand, a full calendar displaying the day, date, and month, this watch is designed for those who appreciate the finer details in life.
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Key Features

  • 40mm stainless steel case with polished finish
  • Silver guilloche dial with intricate pattern
  • Moonphase indicator with astronomical touch
  • Chronograph feature with intuitive interface
  • Longines caliber L678.2 self-winding movement
  • 42-hour power reserve
  • Additional 24-hour hand and full calendar display

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection 40 Chronograph Calendar Stainless Steel / Silver / Alligator
Reference
L2.673.4.78.3
Movement
l678-2
Movement Features
  • Hours, Minutes, Small Seconds, Additional 24 Hour Hand (fixed)
  • Date, Day, Month
  • Chronograph
  • Moonphase
Case
Stainless Steel 40mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] Longines Master Collection Moon Phase Chronograph (40mm) L2.673.4.78.3

Longines Master Collection Moon Phase Chronograph (40mm) L2.673.4.78.3

Longines - L2.673.4.78.6 · $2,250
A Longines Master Collection Moon Phase Chronograph with a 40mm case, automatic caliber L687, and various complications including date, moon phase display, and chronograph.

  • Case size: 40mm diameter
  • Thickness: 14.3mm
  • Movement frequency: 28'800 VPH
Posted at
Jan 27, 2026, 8:44 PM
Active
[WTS] Longines Master Collection Chronograph w/ Custom 1.5 Link for Perfect Sizing! Ref L2.629.4.78.6 - $1,500 Shipped[WTS] Longines Master Collection Chronograph w/ Custom 1.5 Link for Perfect Sizing! Ref L2.629.4.78.6 - $1,500 Shipped

Longines Master Collection Chronograph w/ Custom 1.5 Link for Perfect Sizing! Ref L2.629.4.78.6 - $1,500 Shipped[WTS] Longines Master Collection Chronograph w/ Custom 1.5 Link for Perfect Sizing! Ref L2.629.4.78.6 - $1,500 Shipped

Longines - L2.629.4.78.6 · $1,500
This is an automatic chronograph watch with a classic white dial and a chronograph function, packaged in its original box with papers included.

  • Condition: Next to new
  • Bracelet size customization: Custom 1.5 link
  • Thickness: 11.7mm
Posted at
Feb 5, 2026, 10:22 AM
Active
[WTS] Longines Master Collection Moonphase Chronograph 40mm L2.673.4.78.6

Longines Master Collection Moonphase Chronograph 40mm L2.673.4.78.6

Longines - L2.673.4.78.6 · $1,850
This Longines Master Collection Moonphase Chronograph features a 40mm case and includes a column wheel chronograph, 12 hour chronograph, moonphase display, and triple calendar.

  • Condition: Pre-owned with wear and use, some scratches and scuffs
  • Authentication: includes Box and Papers with Ebay authentication
  • Service history: unknown, previous owner claimed serviced before selling
  • Box condition: slightly damaged with one flap falling off and taped
Posted at
Jan 31, 2026, 4:06 PM
Active
[WTS] REDUCED PRICE! Longines Master Collection Moon Phase (L29094517) ($1600)

REDUCED PRICE! Longines Master Collection Moon Phase (L29094517) ($1600)

Longines - L29094517 · $1,600
This Longines Master Collection Moon Phase watch has been worn minimally and is in terrific working order. It features a scratch-free crystal, case, and leather strap.

  • Condition: Like new - minimal wear
  • Purchase Price: 2350
  • Asked Price Drop: 150
  • Shipping Included: true
Posted at
Jan 28, 2026, 11:24 PM
Active
[WTS] Longines Master Collection Moon Phase (L29094517) ($1700)

Longines Master Collection Moon Phase (L29094517) ($1700)

Longines - L29094517 · $1,700
A Longines Master Collection Moon Phase watch with a minimal owner history, kept in great condition and complete with original papers, box, and warranty card. The watch is sold with shipping included.

  • Condition: Like new with minimal wear
  • Year purchased: 2021
  • Original price: 2350
Posted at
Jan 22, 2026, 10:04 PM
Active