Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 1

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 2

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 3

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 4

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 5

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 6

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 7

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 8

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 9

Thumbnail [WTS] Omega Seamaster Diver 300M 42mm Black Dial 210.30.42.20.01.001 – Like New $6100 10

Model:	Omega Seamaster	Last Scraped:	Jan. 2, 2026, 6:16 p.m.
Username:	DTXTimepieces	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

**Description:** Offered for sale is an **Omega Seamaster Diver 300M ref. 210.30.42.20.01.001**. This example has been **worn only once** and presents in **near-new condition**, conservatively rated **9.9/10**. Please reference the photos for full transparency. The watch is offered as a complete set including **inner & outer Omega boxes, booklet/manuals, pictograms card, and warranty card**. Bracelet shows no notable wear. The Seamaster Diver 300M features a **42mm stainless steel case**, ceramic black wave dial with applied markers, ceramic bezel with white enamel diving scale, and the **Co-Axial Master Chronometer Calibre 8800**, offering excellent accuracy and resistance to magnetic fields. Water resistant to **300 meters** with a screw-down crown and helium escape valve. Authenticity guaranteed. Additional photos or **FaceTime viewings available upon request**. **Price:** $6,100 **Location:** Dallas, TX **TRADES ALWAYS WELCOME** **Dealer:** CastleWatchSupply All pics -> [https://imgur.com/a/omega-seamaster-diver-300m-black-UU24Gcz](https://imgur.com/a/omega-seamaster-diver-300m-black-UU24Gcz) Timestamp -> [https://imgur.com/LRLz540](https://imgur.com/LRLz540) Instagram: CastleWatchSupply Located: Dallas, TX

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Highest:	$8,999	Lowest:	$3
Median:	$2,500.00	Std. Dev:	±$2,096.65

Estimated Private Party Value $990 — $4,279


	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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