Longines Master Collection Master Collection Big Date

Reference L2.648.4.51.5

About this watch

The Longines Master Collection Big Date is a masterclass in luxury watchmaking. This stunning timepiece combines classic aesthetics with modern functionality, making it a must-have for collectors and casual wearers alike. The elegant round case, crafted from stainless steel, exudes durability while maintaining a refined look. The black guilloche dial adds sophistication, while the Roman numeral indexes provide a classic touch. The big date display at 12 o'clock is a standout feature, providing clarity and ease of reading. The watch is protected by a robust sapphire crystal, ensuring it remains stunning throughout its lifespan. The open case back allows you to admire the intricate workings of the Longines caliber L607.2 movement, known for its reliability and precision. With a power reserve of 42 hours, this watch keeps ticking even when taken off for a day or two. Its versatility makes it suitable for both casual and formal occasions, making it a reliable companion for any wardrobe.

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Key Features

Longines caliber L607.2 automatic movement
Stainless steel round case with sapphire crystal
Black guilloche dial with Roman numeral indexes
Big date display at 12 o'clock
Feuille style hands and 21 jewels
42-hour power reserve
30-meter water resistance

Specifications

Brand

Longines

Family

Master Collection

Model

Master Collection Big Date

Reference

L2.648.4.51.5

Movement

l607-2

Movement Features

Hours, Minutes, Seconds
Big Date

Case

Stainless Steel 40mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

Longines Master Collection. Big Date. 40mm. Automatic.

Longines - Master Collection. Big Date. Automatic. 40mm. · $1,100

A Longines Master Collection watch with a big date display and automatic movement, featuring a 40mm case size.

Case diameter: 40mm
Shipping cost included: true

Posted at

Dec 11, 2025, 9:14 AM

Active

View listing on r/WatchExchange

40mm Longines Master Collection Chronograph / Moon Phase Ref.L2.673.4.78.3

Longines - L2.673.4.78.3 · $2,250

The Longines Master Collection Chronograph with Moon Phase features a chronograph, moon phase display, and a full calendar. It has a 40mm case size and is powered by an automatic caliber L687 movement.

Condition: Great condition, minor marks on the case
Movement: Automatic caliber L687 (modified ETA Valjoux 7751)
Case size: 40mm
Functions: Chronograph, moon phase display, full calendar (day, date, month)

Posted at

Dec 11, 2025, 1:11 AM

Active

View listing on r/WatchExchange

[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.

Longines - L.2785.4, L2.920.4.78.3, L3.810.4.93.6 · $6,995

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

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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

View listing on r/WatchExchange