Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 1

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 2

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 3

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 4

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 5

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 6

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 7

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 8

Thumbnail [WTS] Omega Seamaster Professional 300M – Ref. 210.30.42.20.01.001 – 42mm Co-Axial Master Chronometer – Box & Cards – $3,799 Shipped 9

Model:	Omega Seamaster	Last Scraped:	Jan. 6, 2026, 3:16 a.m.
Username:	Silver_Dealer_4932	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

Condition — Excellent overall with light, honest wear. Stainless steel case shows minor hairlines and surface scuffs consistent with careful use; edges remain sharp with no dings or deformation. Black ceramic bezel is clean with crisp numerals and no chips or cracks. Sapphire crystal is clear with no scratches. Black wave dial is clean with even lume plots; hands show no corrosion or damage. Lume is strong and even. Screw-down crown operates smoothly. Caseback and bracelet show light contact marks; clasp has minor surface wear but functions properly. Box & Accessories – Includes inner and outer Omega wooden boxes, Omega card holder, pictogram card, Master Chronometer card, operating manual, and original WatchMaxx purchase receipts showing a total of $4,445. Bracelet is currently sized to fit approximately a 7.8″ wrist. Price – $3,799 shipped (Zelle / Wire preferred). Apple Pay / Venmo +15. Sales tax required for GA/IL buyers without resale certificate. Shipping – Fully insured FedEx 2-Day within 24 hours of cleared payment. Timestamp – Included in photos. Overview – Omega Seamaster Professional 300M (Ref. 210.30.42.20.01.001). 42mm stainless steel case with black wave dial, black ceramic bezel, screw-down crown and helium escape valve, 300m water resistance, and Omega Co-Axial Master Chronometer Caliber 8800. A modern Seamaster with excellent legibility, durability, and everyday wearability.

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Highest:	$9,000	Lowest:	$3
Median:	$2,500.00	Std. Dev:	±$2,110.84

Estimated Private Party Value $991 — $4,299


	Established:	1848
	Website:	https://www.omegawatches.com/
	Country of Origin:	Switzerland

Founded at La Chaux-de-Fonds, Switzerland in 1848 by 23-year-old Louis Brandt who assembled key-wound precision pocket watches from parts supplied by local craftsmen. He travelled throughout Europe selling his watches from Italy to Scandinavia by way of England, his chief market. After Louis Brandt's death in 1879, his two sons Louis-Paul and Cesar, troubled by irregular deliveries of questionable quality, abandoned the unsatisfactory assembly workshop system in favour of in-house manufacturing and total production control. Due to the greater supply of manpower, communications and energy in Bienne, the enterprise moved into a small factory in January 1880, then bought the entire building in December. Two years later the company moved into a converted spinning-factory in the Gurzelen district of Bienne, where headquarters are still situated today. Their first series-produced calibres, Labrador and Gurzelen, as well as, the famous Omega calibre of 1894, would ensure the brand's marketing success.

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