Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 1

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 2

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 3

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 4

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 5

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 6

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 7

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 8

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 9

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 10

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 11

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 12

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 13

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 14

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 15

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 16

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 17

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 18

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 19

Thumbnail [WTS] 1958 Omega Seamaster Ref. 2846 – Cal. 501 – w/ uncommon Large Hippocampus Caseback – $850 Shipped 20

Model:	Omega Seamaster	Last Scraped:	May 19, 2025, 2:18 p.m.
Username:	Brave_Word_9042	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

Hi all, Up for sale is a lovely vintage **Omega Seamaster** from **1958**, reference **2846**, powered by the automatic **Caliber 501**. What makes this piece extra special is the **large hippocampus logo** on the caseback—Omega only used this version for a short time in 1958, so it’s much less common than the usual smaller logo. The watch is in overall good shape and runs great after a **fresh service in May 2025**. [Timegrapher result video.](https://www.youtube.com/shorts/suXATUy-kyg) The **dial is original** and looks nice for its age—clean and legible with great vintage character. The **case has some light scratches** from normal use over the years, and while it might’ve been polished lightly in the past, the lugs still keep their original shape and edges. It still has the **original Omega clover crown**, which is period-correct for this model. The **Plexiglas is also original** and has the Omega logo at the center. The watch is paired with an **aftermarket strap and buckle**, comfortable and ready to wear. Everything else is original. I’ve included lots of pictures so you can see the condition clearly—what you see is exactly what you’ll get. **Price: $850 USD**, including **DHL Express shipping worldwide** (arrives in 3–5 days) with **full insurance through Secursus**. Payment accepted via **Wise, wire transfer, crypto**, or **PayPal (Goods & Services accepted — please add fees)**. All sales are final, but I’m happy to answer any questions or send more photos or a video if needed. Just shoot me a message. Thanks for looking!

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Highest:	$9,000	Lowest:	$1
Median:	$2,250.00	Std. Dev:	±$2,099.11

Estimated Private Party Value $975 — $4,179


	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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