The First Omega Constellation

It is well known that the Constellation line was developed in response to the enthusiastic take-up of the limited edition Omega Centenary 2499 and 2500 models.  Featuring high-grade chronometer movements and elegant case and dial ensembles, the Centenary models heralded a new high point in precision watchmaking.

The first Omega Constellation to be assembled was the above calibre 352 RG model in case 2648 (click on pictures for larger view).  The case, with plumped middle, lyre-shaped lugs and chamfered bezel, was identical in design to the Centenary models, the exception being the introduction of an observatory medallion on the outer case back. 

The very first examples of the Omega Constellation 2648 to come off the production line in 1952 are believed to have been 18 karat gold cased models with slightly grained silvered dials, upon which a ‘cartouche’ appeared with a printed Omega logo. This dial design was also used in some Seamaster 2520 chronometer models. However the life span of the dial design was very short in both lines, and was soon replaced with domed ivory and guilloche dials. 

Thus the above 18 karat Omega Constellation, with sharp case and dial in good condition for its age, can claim at least four firsts: first model number, first movement series (352 RG), first dial design and one of the first  examples to come off the initial production run in 1952.  A handful of firsts that make this example one of the rarest Constellations in existence.


  1. Rob Stern7:52 am

    I found a watch just like this one in my wife's family safe. Case number is 2648 and the 2nd number on the case back is 11070650, which I can't find the meaning of. The movement serial number is 12370930. It has 18K hallmarks and Omega stamps. It has the original band and Omega pin buckle in gold. Would it be best to leave as is or restore with new crystal, band, etc? I would like to wear it for now and perhaps sell in the future.

    1. Hi Rob,

      The second number is just a case number whereas the 2648 describes the model.

      What ever you do, please consider not wearing the watch until the movement has been cleaned and oiled. It's hard to advise what to do with the watch without pictures. Click on the about me link opposite and you will find an email option.

      Happy to look at your pics and offer some observations about restoration and/or maintenance.



    2. Rob Stern10:53 pm

      Thanks Desmond,
      I will get some pics to u. I will definitely have a service done before wearing. I had a great watchmaker in Colorado (Mike Knight if he is watching these posts) who restored a 59 Seamaster for me and he did a beautiful job. TY for hosting this forum and looking forward to your observations on my new discovery.