Longines Master Collection Master Collection Date 42

Reference L2.665.4.51.6

Longines Master Collection Date 42

About this watch

The Longines Master Collection Date 42 (L2.665.4.51.6) is a masterpiece of watchmaking, boasting a rich heritage and exceptional build quality. This timepiece features an automatic movement, Longines caliber L691.2, which operates at 28,800 vibrations per hour, ensuring precise and smooth timekeeping. The classic round case made from stainless steel exudes elegance, while the black dial with Roman numeral indexes adds a touch of sophistication. Sapphire glass protects the watch, providing scratch resistance and clarity. With a diameter of 42.00 mm and lug width of 21.00 mm, this watch strikes a balance between presence and wearability. The stainless steel bracelet is designed for comfort, allowing for a snug yet comfortable fit on your wrist. The Master Collection Date 42 is more than just a timepiece; it's a statement of style, precision, and heritage.
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Key Features

  • Longines caliber L691.2 automatic movement
  • Stainless steel case with sapphire glass
  • Black dial with Roman numeral indexes
  • Feuille hands for elegant timekeeping
  • Date function for added functionality
  • Water resistance up to 30 meters
  • 46-hour power reserve

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection Date 42
Reference
L2.665.4.51.6
Movement
l691-2
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] Longines Avigation w/ Master collection bracelet and OEM leather (Lowest price in the world)

Longines Avigation w/ Master collection bracelet and OEM leather (Lowest price in the world)

Longines - L2.629.4 · $1,200
A Longines Avigation Chronograph with a 40mm black dial, running strong and keeping great time.

  • Condition: Lightly used
  • Bracelet type: Master collection steel bracelet
  • Strap type: OEM leather strap
  • Wrist size compatibility: up to an 8+ inch wrist
Posted at
Feb 15, 2026, 12:59 PM
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View listing on r/WatchExchange
[WTS] Longines Master Collection Moonphase 42mm – 2023-2024 movement L899.5 $1500

Longines Master Collection Moonphase 42mm – 2023-2024 movement L899.5 $1500

Longines - L2.919.4.78.3 · $1,500
A Longines Master Collection Moonphase watch in excellent condition, featuring a 42mm stainless steel case, silver barleycorn dial, and automatic L899.5 movement.

  • Condition: Excellent condition
  • Case size: 42mm diameter
  • Movement caliber: L899.5
  • Power reserve: ~72-hour power reserve
Posted at
Feb 11, 2026, 1:31 PM
Active
View listing on r/WatchExchange
[WTS] Longines Master Collection Chronograph Moonphase L2.673.4.61.2 – $2,850 shipped

Longines Master Collection Chronograph Moonphase L2.673.4.61.2 – $2,850 shipped

Longines - L2.673.4.61.2 · $2,850
This Longines Master Collection Chronograph Moonphase features a chronograph function and moon phase display. The watch is in excellent condition with very minor signs of wear.

  • Condition: Excellent overall condition, lightly worn
  • Case wear: very minor signs
  • Crystal condition: flawless
  • Dial condition: flawless
Posted at
Feb 8, 2026, 1:09 PM
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[WTS] Longines Master Collection Moonphase Chronograph L2.673.4.78.3

Longines Master Collection Moonphase Chronograph L2.673.4.78.3

Longines - L2.673.4.78.3 · $2,050
This Longines Master Collection Moonphase Chronograph features an array of complications, a 40mm size, automatic movement, and original strap.

  • Condition: fair to good pre-owned condition
  • Size: 40mm diameter
  • Movement: Automatic movement
Posted at
Feb 8, 2026, 10:03 AM
Active
View listing on r/WatchExchange
[WTS] Longines Avigation automatic Chronograph with OEM leather and Master Collection steel bracelet(price reduction)

Longines Avigation automatic Chronograph with OEM leather and Master Collection steel bracelet(price reduction)

Longines - L2.629.4 · $1,250
The Longines Avigation automatic Chronograph features a 40mm black dial with date functionality and chronograph capabilities. It comes with an OEM leather strap and a master collection steel bracelet, making it suitable for both formal and sporty occasions.

  • Condition: Lightly used
  • Bracelet price: $400 (Master Collection steel)
  • Shipping: FedEx 'hold at location'
  • Accepted payment methods: Zelle, cash app, PayPal F&F and G&S(+4.5%)
Posted at
Feb 6, 2026, 8:02 PM
Active
View listing on r/WatchExchange
[WTS] Longines Master Collection Moon Phase Chronograph (40mm) reference L2.673.4.78.6

Longines Master Collection Moon Phase Chronograph (40mm) reference L2.673.4.78.6

Longines - L2.673.4.78.6 · $2,250
A beautiful Longines Master Collection Moon Phase Chronograph with a 40mm case, featuring hours, minutes, small seconds, date, and chronograph functions.

  • Condition: Excellent used condition
  • Case size: 40mm diameter
  • Thickness: 14.3mm
  • Power reserve: 66 hour
Posted at
Feb 6, 2026, 12:28 PM
Active
View listing on r/WatchExchange
[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
View listing on r/WatchExchange