Omega Speedmaster Speedmaster Professional Moonwatch 321 Platinum / Black / Alligator

Reference 311.93.42.30.99.001

Omega Speedmaster Professional Moonwatch 321 Platinum / Black / Alligator

About this watch

The Omega Speedmaster Professional Moonwatch 321 Platinum is a stunning tribute to the brand's rich legacy of space exploration. With its platinum case, chronograph movement, and luxurious materials, this watch demands attention without being overly ostentatious. The black onyx dial adds depth, while the stick and dot indexes stand out beautifully. At the core is the Omega caliber 321 B, a hand-wound marvel that pays homage to original Speedmaster movements. With a power reserve of 55 hours and a frequency of 18,000 vibrations per hour, it ensures precision and reliability. The chronograph feature operates through pushers on the side of the watch, engaging the timing mechanism. This timepiece is a celebration of engineering, design, and the spirit of exploration. Its timeless elegance and advanced functionality make it a worthy addition to any watch collection.

Buy Now on Jomashop

This is an affiliate link

Key Features

Platinum case with 42mm diameter
Omega caliber 321 B hand-wound movement
Chronograph feature with column wheel mechanism
Water resistance up to 50 meters
Black onyx dial with stick and dot indexes
Alligator leather strap for comfort and style

Specifications

Brand

Omega

Family

Speedmaster

Model

Speedmaster Professional Moonwatch 321 Platinum / Black / Alligator

Reference

311.93.42.30.99.001

Movement

321-b

Movement Features

Small Seconds, Hours, Minutes
Chronograph, Column wheel

Case

42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

310.30.42.50.01.002 Omega Sapphire Speedmaster 2025 | Complete Box & Papers | $6,699 shipped

Omega - 310.30.42.50.01.002 · $6,699

This is the current-generation sapphire sandwich reference Omega Speedmaster Professional featuring the classic black dial on a stainless steel bracelet and the updated Caliber 3861 movement. The watch comes complete with original inner and outer boxes, booklet, and warranty card.

Condition: Excellent overall condition, with a few light marks on the case and minor hairlines on the bracelet.
Case size: 42mm
Movement: Manual-wind Caliber 3861 (Master Chronometer)
Crystal: Sapphire (front & display caseback)

Posted at

Feb 8, 2026, 1:35 PM

Active

View listing on r/WatchExchange

2025 Unworn Omega Speedmaster 38mm Cappuccino Sedna Gold With Factory Diamonds 324.28.38.50.02.002 Just In Time For Valentines! $9,495

Omega - 324.28.38.50.02.002 · $9,495

This listing features a brand new Omega Speedmaster, ideal for Valentine's Day.

Condition: Unworn
Diameter: 38mm

Posted at

Feb 8, 2026, 10:58 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Racing Cart

Omega - 3510.80 · $3,899

This Omega Speedmaster Racing Cart Edition features a 39mm case in excellent condition, including original box, card, authentication papers, and extra links.

Condition: Mint
Case size: 39mm

Posted at

Feb 7, 2026, 8:16 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Professional Moonwatch Full Steel Yellow Patina 1978 (Serviced)

Omega - 145.022-78 · $5,050

This Omega Speedmaster Professional Moonwatch is a well-preserved and reliable example of the Speedmaster Moonwatch, featuring a black tritium dial with even yellow patina across all hour markers.

Condition: Very good overall shape, all-original condition
Case size: 42mm
Year: 1978
Movement serviced: February 2026

Posted at

Feb 7, 2026, 5:24 PM

Active

View listing on r/WatchExchange

Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm - 311.93.44.51.99.001

Omega - 311.93.44.51.99.001 · $7,700

Up for sale is an Omega Speedmaster Grey Side Of The Moon - GSOTM - Grey Dial - 44mm watch that functions perfectly mechanically.

Condition: Great condition, small chip on edge of case back
Case Size: 44mm diameter
Case Back Condition: small chip at 9-o'clock

Posted at

Feb 7, 2026, 11:30 AM

Active

View listing on r/WatchExchange

BNIB 2026 Omega Speedmaster Moonwatch Professional White $7,999

Omega - 310.30.42.50.04.001 · $7,999

The Omega Speedmaster Moonwatch Professional features a glossy white lacquered dial, black markers, and red 'Speedmaster' text. It uses the updated 3861 movement with a sapphire crystal for a more modern look.

Condition: Brand new in box with no issues
Case size: 42mm
Case thickness: 13.2mm
Lug width: 20mm

Posted at

Feb 7, 2026, 11:13 AM

Active

View listing on r/WatchExchange

Omega Speedmaster Date 3210.50.00

Omega - 3210.50.00 · $2,500

A Omega Speedmaster Date in excellent condition, featuring a 7.5” wrist size and 7 removable links.

Condition: Excellent condition
Bracelet stretch: no
Number of links: 7
Links removable: yes

Posted at

Feb 7, 2026, 9:04 AM

Active

View listing on r/WatchExchange

Omega Speedmaster 38 Black Dial 2023

Omega - Speedmaster 38 · $3,800

This Omega Speedmaster 38 black dial blends the heritage of the 'Moonwatch' with refined, wearable proportions. It is powered by the Co-Axial Calibre 3330 and features a date window at 6 o'clock, 100m water resistance, and an iconic Seahorse medallion caseback.

Condition: Very Good
Movement: Co-Axial Calibre 3330
Water resistance: 100m
Depth rating: 10bar

Posted at

Feb 6, 2026, 3:31 PM

Active

View listing on r/WatchExchange