Omega Seamaster 300 Seamaster 300 Co-Axial Master Chronometer Yellow Gold / Malachite

Reference 234.63.41.21.99.001

About this watch

The Omega Seamaster 300 Co-Axial Master Chronometer in Yellow Gold and Malachite is a masterpiece of horology, combining luxurious materials, precision engineering, and stunning design. At its heart is the automatic Omega caliber 8913 movement, boasting a chronometer rating, 60-hour power reserve, and 25,200 vibrations per hour for unparalleled accuracy. The watch features a striking yellow gold case and Malachite dial, with arrow-shaped hands providing both style and clarity. With its impressive water resistance of 300 meters, this timepiece is perfect for divers and luxury watch collectors alike. Whether you're exploring coral reefs or attending a gala, the Omega Seamaster 300 ensures you're always on time and in style.
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Key Features

  • Automatic Omega caliber 8913 movement
  • Chronometer-rated accuracy
  • 60-hour power reserve
  • Yellow gold case with Malachite dial
  • Rotating bezel for timing dives or activities
  • Water resistance of 300 meters
  • Sapphire glass protection against scratches and impacts

Specifications

Brand
Omega
Family
Seamaster 300
Model
Seamaster 300 Co-Axial Master Chronometer Yellow Gold / Malachite
Reference
234.63.41.21.99.001
Movement
8913
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
Yellow Gold 41mm
Dial Color
Green
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Omega Seamaster 300M Co-Axial Mid-size 2220.80 Box and Card - $2,850

Omega Seamaster 300M Co-Axial Mid-size 2220.80 Box and Card - $2,850

Omega - 2220.80 · $2,850
Up for sale is my Omega Seamaster 2220.80, a mid-size watch featuring an automatic co-axial cal 2500 movement.

  • Condition: 8.7/10 - great condition with minimal marks and hairlines
  • Case size: 41mm diameter
  • Movement: co-axial cal 2500
  • Bracelet fit: up to 7-7.25 inch wrists depending on wrist shape
Posted at
Jan 7, 2026, 7:54 PM
Active
[WTS] Omega Seamaster 300 Professional 41mm Flat Black Dial $3920

Omega Seamaster 300 Professional 41mm Flat Black Dial $3920

Omega - 300 Professional · $3,920
A Omega Seamaster 300 Professional watch with a flat black dial.

  • Diameter: 41mm
Posted at
Jan 6, 2026, 9:31 AM
Active
[WTS] Omega Seamaster 300M Co-Axial Mid-size 2220.80 Full Kit - $2,900 - Reserved post for u/whitekimchee

Omega Seamaster 300M Co-Axial Mid-size 2220.80 Full Kit - $2,900 - Reserved post for u/whitekimchee

Omega - 2220.80 · $2,900
Up for sale is my Omega Seamaster 2220.80, a mid-size automatic co-axial cal 2500 movement watch that measures at 41mm.

  • Condition: 8.7/10 - great condition with minimal marks/hairlines
  • Movement: automatic co-axial cal 2500
  • Case size: 41mm diameter
  • Bracelet size: up to 7-7.25 inch wrists with all links included
Posted at
Jan 5, 2026, 9:49 PM
Active
[WTS] Omega Seamaster 300Heritage Co-Axial Chronometer 234.30.41.21.01.001 Complete Set

Omega Seamaster 300Heritage Co-Axial Chronometer 234.30.41.21.01.001 Complete Set

The Omega Seamaster 300 Heritage has a black dial with broad arrow hands and warm toned lume, giving it a classic dive watch look. The steel case has sharp lines and a confident shine, paired with a matching bracelet that makes it feel solid and balanced.

  • Condition: Excellent
  • Case material: steel
  • Bracelet type: matching
Posted at
Jan 4, 2026, 4:52 PM
Active
[WTS] Omega Seamaster 300 / Commanders Watch / 007 / Excellent / $5300

Omega Seamaster 300 / Commanders Watch / 007 / Excellent / $5300

Omega - 300 · $5,300
The listing mentions an Omega Seamaster 300, also known as a Commander's Watch, with ties to the James Bond franchise.

  • Condition: Excellent
  • Model name: Seamaster 300
Posted at
Jan 4, 2026, 1:26 PM
Active
[WTS] Omega Seamaster 300 Gray Dial Bracelet & Strap $4385

Omega Seamaster 300 Gray Dial Bracelet & Strap $4385

Omega - Seamaster 300 · $4,385
The Omega Seamaster 300 is a watch with a gray dial and features both a bracelet and strap.

  • Dial color: gray
Posted at
Jan 4, 2026, 10:04 AM
Active
[WTS] OMEGA SEAMASTER 300 Watchco 165.024 166.0324 cal.552 w/ oem bracelet

OMEGA SEAMASTER 300 Watchco 165.024 166.0324 cal.552 w/ oem bracelet

This is a legendary Watchco Omega Seamaster, one of only a handful of NOS examples in the world at the time. It has been owned for 5 years and was last serviced when purchased.

  • Condition: Pre-owned with minor scratches/scuffs
  • Bracelet origin: Lewis Jewelers in Ann Arbor, MI
  • Clasp condition: light 'desk diving' scuffs
  • Crystal condition: some scuffs (buffable with Polywatch)
Posted at
Jan 3, 2026, 2:40 PM
Active
[WTS] Omega Seamaster 300m 2562.20

Omega Seamaster 300m 2562.20

Omega - 2562.20 · $1,375
This Omega Seamaster professional diver 300m features a Quartz movement and is available for sale.

  • Condition: excellent with minor signs of wear
  • Movement: quartz movement
  • Currency Euro: euro
  • Currency Usd: us dollar
Posted at
Jan 2, 2026, 5:51 PM
Active