Omega
Omega Seamaster "Radium Prototype"
Omega Seamaster "Radium Prototype"
Reference: 2846
Year: 1958
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Introduced in 1948 to celebrate Omega’s centenary, the Seamaster line was born from the brand’s ambition to create a waterproof, elegant wristwatch suitable for both professional and everyday use. The early Seamaster models, inspired by the robust timepieces Omega supplied to the British military during WWII, combined precision with understated refinement—an ethos that would define the collection for decades.
This Omega Seamaster Ref. 2846, produced in 1958, represents a fascinating early chapter in that story. Featuring the automatic Calibre 501, one of Omega’s most reliable mid-century movements, this particular example—serial number 15.xxx.xxx—belongs to the transitional era that bridged vintage charm with technical innovation. The 34.5 mm stainless steel case remains in exceptionally sharp condition, with well-defined edges and original factory geometry, a rare sight on pieces of this age.
The dial, perfectly preserved, exhibits a subtle vintage warmth and crisp print that testify to its originality. Believed to be a radio prototype, it stands as a remarkable collector’s piece within the Seamaster lineage, merging historical intrigue with mechanical excellence.
Completing the ensemble is a black pigskin LTF strap paired with the original Omega steel buckle, adding both authenticity and elegance. This Seamaster 2846 is a true time capsule from the golden age of Swiss watchmaking—an untouched survivor that captures the spirit of Omega’s pioneering craftsmanship in the 1950s.
Are your watches authentic?
Are your watches authentic?
Yes. Before it goes on sale, every watch is checked by our team: authentication, inspection of the movement, case and bracelet, and documentation of its condition. We guarantee the originality of all our pieces.
Is there a warranty?
Is there a warranty?
Every purchase is covered by the legal guarantee of conformity under Italian and EU law. Any lack of conformity must be reported within two months of discovering it.
How is the watch shipped?
How is the watch shipped?
Shipping is free worldwide. We use selected couriers and send you the tracking details once payment has been received. For deliveries outside Italy, import duties and taxes are paid by the buyer.
How can I pay?
How can I pay?
By credit card, bank transfer or buy-now-pay-later services where available. If you pay by bank transfer you get a 1.5% discount: contact us on WhatsApp.
Can I see the watch in person?
Can I see the watch in person?
Yes, in our shop at Via Porta Rossa 75/R in Florence, usually open from Tuesday to Saturday. Opening hours change with the season: you always find the current ones on Google Maps.
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Legal guarantee of conformity
Download the notice as PDF

Specifics
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General info
- Serial number: 15.xxx.xxx
- Case material: Steel
- Caseback: Snap-back
- Case diameter: 34.5 mm
- Glass: Plexiglass
- Bezel Materials: Steel
- Dial color: Black
- Dial numerals: Arabic
- General conditions: Great conditions
- Water resistance rate: Not waterproof
- Delivery contents: Watch only
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Band or Strap
- Band material: Metallic bracelet
- Lug width: 18 mm
- Buckle type: Classic
- Buckle material: Steel
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Movement
- Calibre: Omega 501
- Movement type: Automatic
- Complications: Date
- Service: Recently serviced or New