1951 Omega Seamaster Ref.2576-12

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There is one small detail which makes this particular piece very different comparing to other Seamaster watches from the early 50s. This small detail is all original glossy black dial with applied golden hour markers and radium lume and it makes the watch really rare. Showing honest and charming patina, this dial is a perfect example of what experienced collectors like - the character of ageing, originality and attraction.

Perfectly functional. Technical warranty: 1 year.


  • 2-body case with screw-down case back. High-polished finishing.
  • Overall good condition showing various traces of use, minor scratches and dents. Possibly unpolished, showing original facets on the lugs.
  • 34 mm (without crown) / 47 mm (lug-to-lug) / 18 mm (between lugs)
  • Original steel crown signed with Omega logo. 
  • Original hesalite crystal showing minor scratches. Polished in the past.


    • Precise bumper-automatic movement
    • Cal.342 signed "Omega Swiss"
    • Gold-plated, 17 Jewels, 19800 A/h, 42 hours of power reserve
    • Serial number: 128xxxxx
    • Service history is unknown, however, the watch shows strong results: 260 deg. of amplitude, +4 seconds a day, 0.7 ms of beat error.


    • Original untouched glossy black dial in good condition showing minor ageing of the surface (matting).
    • Signed "Omega Automatic Seamaster" at 12 o'clock, raised silver Omega logo. Signed "Swiss Made" at 6 o'clock.
    • Original but relumed golden hour and minute hands
    • Raised silver hour markers and hands still bear radium lume - Geiger counter shows up to 5 uSv/h. (dial up)

    Delivery set:

    • The watch with generic leather strap and generic steel buckle
    • Suede leather watch travel case
    • Our company’s warranty certificate, invoice and general terms and conditions.

    Collections: Archive

    Category: Omega

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    Measuring a watch

    It is always crucial to understand the size of the watch, especially when it comes to vintage watches which are generally considered as too small in comparison with what watch industry offers today. For example, the original Patek Philippe Calatrava introduced in the 1930s was only 31 mm in diameter, while today's classic Calatrava is 39 mm. When you think about 8 mm, it doesn't seem to be a big difference, but believe it is.

    In our condition reports we normally disclose three most important parameters as follows: diameter without crown / lug-to-lug length / lug width. 

    Diameter without crown

    It is, so far, the most important measurement to understand the size of a regular round-shaped watch.It helps you to understand proportions and overall look of the watch. It is important to consider width of the bezel and color of the dial, because certain combinations may make the watch look bigger, while some other smaller. It is all very individual, however there is common understanding:

    Lug-to-lug width

    This parameter will help you to understand whether the watch is comfortable for wearing. You should compare lug-to-lug width with the width of your wrist, and if lug-to-lug width is smaller or equal, then this watch shall be comfortable.

    Lug width

    This measurement is defining what size of strap you need for the particular watch. Depending on era and manufacturer you can find watches with lug width between 14 mm and 24 mm. Most common sizes are 18 mm and 20 mm.