Longines Master Collection Master Collection 40 Moonphase Stainless Steel / Black-Roman / Bracelet

Reference L2.909.4.51.6

Longines Master Collection 40 Moonphase Stainless Steel / Black-Roman / Bracelet

About this watch

The Longines Master Collection 40 Moonphase, model L2.909.4.51.6, is a masterpiece of luxury watchmaking. This elegant timepiece boasts a classic design with a black guilloché dial adorned with Roman numerals, exuding timeless appeal. The round stainless steel case (40mm diameter) and sleek design make it versatile for various occasions. At its heart beats the self-winding Longines caliber L899.2 movement, featuring a moon phase indicator and date function. This automatic movement is based on the reliable ETA A31.L91, with a frequency of 25,200 vibrations per hour and a power reserve of 64 hours. The watch's durability is ensured by its stainless steel case, resistant to corrosion and scratching. Protected by sapphire crystal, the stunning guilloché dial remains vibrant and clear. The comfortable stainless steel bracelet features a deployment clasp, adding an extra layer of sophistication. With a water resistance rating of 30 meters, this watch is suitable for light splashes but not designed for aquatic adventures. The Longines Master Collection 40 Moonphase is an investment in style and craftsmanship, available at authorized retailers or luxury boutiques.

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Key Features

Black guilloché dial with Roman numerals
Self-winding Longines caliber L899.2 movement
Moon phase indicator and date function
Stainless steel case (40mm diameter)
Sapphire crystal protection
Comfortable stainless steel bracelet with deployment clasp
30 meters water resistance

Specifications

Brand

Longines

Family

Master Collection

Model

Master Collection 40 Moonphase Stainless Steel / Black-Roman / Bracelet

Reference

L2.909.4.51.6

Movement

l899-2

Movement Features

Hours, Minutes, Small Seconds
Date
Moonphase

Case

Stainless Steel 40mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

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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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

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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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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

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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

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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

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[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

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