Longines Master Collection Master Collection Worldtime Black

Reference L2.631.4.51.5

About this watch

The Longines Master Collection L2.631.4.51.5 is a masterclass in elegance and sophistication, with its sleek black dial and elegant Roman numeral indexes commanding attention while maintaining an air of refinement. The round stainless steel case strikes a balance between bold and understated, measuring 39mm in diameter and featuring a lug width of 20mm for comfortable wear. Protected by sapphire crystal, the dial is highly resistant to scratches, making it suitable for everyday wear. One of the standout features of this watch is its world time functionality, allowing you to keep track of time in different parts of the globe with ease. Powered by the Longines caliber L635 movement, a sophisticated automatic mechanism that ensures accurate timekeeping and a power reserve of 38 hours. This watch is not just an accessory, but a statement piece that embodies the brand's rich heritage and commitment to craftsmanship.
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Key Features

  • Longines caliber L635 automatic movement
  • Sapphire crystal for scratch resistance
  • 30 meters water resistance
  • Black dial with Roman numeral indexes
  • 39mm round stainless steel case
  • 20mm lug width for comfortable wear
  • World time functionality

Specifications

Brand
Longines
Family
Master Collection
Model
Master Collection Worldtime Black
Reference
L2.631.4.51.5
Movement
l635
Movement Features
  • Hours, Minutes, Seconds, World Time
  • Date
Case
Stainless Steel 39mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] Lot of three Longines (Conquest, Master Collection, and Spirit) and two NOMOS Glashütte (Club Automat and Metro Neomatik), some with unworn bands, boxes, and papers. Over $16k retail, asking only $6995 for all five watches.

Lot of three Longines (Conquest, Master Collection, and Spirit) and two NOMOS Glashütte (Club Automat and Metro Neomatik), some with unworn bands, boxes, and papers. Over $16k retail, asking only $6995 for all five watches.

A collection of five watches from Longines and NOMOS Glashütte, including the Conquest, Master Collection, Spirit, Club Automat Datum Dunkel, and Metro Neomatik 41 Update.

  • Retail value: $16k
  • Shipping: CONUS shipped
  • Payment methods: Zelle/Venmo preferred, PayPal FF available
Posted at
Dec 7, 2025, 7:25 PM
Active
Longines Master Collection Moonphase L2.673.4.78.3 [WTS]

Longines Master Collection Moonphase L2.673.4.78.3

Longines - L2.673.4.78.3 · $2,100
This is a Longines Master Collection Moonphase watch in the 40mm size, featuring a moonphase display and a full kit with leather strap, links, spring bars, inner box, outer box, manuals, and hang tags.

  • Condition: Near perfect with one small mark near the lugs
  • Size: 40 mm diameter
  • Strap condition: Shows some signs of wear
Posted at
Nov 30, 2025, 11:46 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 · $2,100
This Longines Master Collection Moonphase Chronograph is a 40mm version featuring a Column Wheel, with a box and papers included.

  • Condition: Pre-owned with wear and use
  • Size: 40mm diameter
  • Box condition: Damaged with one flap falling off and taped
  • Papers included: Yes
Posted at
Nov 26, 2025, 11:56 PM
Active