Help trying to identify my fathers Omega

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Hi all, looking for help in identifying my fathers Omega. Purchased in Cyprus for his 21st in 1955, came with a now lost box and papers and originally, he thinks, had a white leather strap, long since replaced. I have attached a photo of the inside of the back cover and the watch itself, thanks for any info
 
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You can Google the model number on the inside of the case 2900-1, it will bring up lots of references for it!
 
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Omega's vintage database has an entry for the CK2900 from 1956. The example photo is a white dial.
omega-vintage-other-ck-2900-l.jpg
 
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You can Google the model number on the inside of the case 2900-1, it will bring up lots of references for it!
Thanks for this, so the 2900-1 is the ref number, where would I find the serial number? Or are they one and both? thanks
 
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The serial number and caliber no. should be written on the mechanism.
 
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The serial number and caliber no. should be written on the mechanism.
Thanks, will get the back off again! Thanks
 
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Ok, have the serial number, model ref and calibre, would I forward this to Omega? Apologies if daft question
 
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Ok, have the serial number, model ref and calibre, would I forward this to Omega? Apologies if daft question

What is it you hope to accomplish by sending information to Omega?
 
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What is it you hope to accomplish by sending information to Omega?
What I would like to learn what model it is, I think it could be a Trésor. The glass is also plastic and my father has no memory of it ever being changed, so my accomplishment would be to identify the model and what it would have been when bought.
 
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What I would like to learn what model it is, I think it could be a Trésor.
I believe the Tresor range were solid gold cases made for the South American Market
 
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The glass is also plastic and my father has no memory of it ever being changed

Acrylic crystals were used in vintage omegas. From late 40s/early 50s onwards they were marked in the centre with omega symbol. (More easily seen under magnification).
If your crystal has the marking then it is either original or it was replaced at some point but with another genuine omega crystal.
Edited:
 
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my accomplishment would be to identify the model and what it would have been when bought.

From the movement serial number you should be able to guesstimate when the watch was manufactured.
You can send the information to omega by paying for an extract from the archives. Can't remember the current cost but probably around £150.
This will tell you more definitively when the watch was manufactured and the country it was originally dispatched to.
I suspect the model will simply be listed as CK2900. Not all watches had a model name
 
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Thanks all for you help, I can’t make out any markings on the glass and to honest it feels more plastic than acrylic crystal I will keep looking, thanks
 
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Thanks all for you help, I can’t make out any markings on the glass and to honest it feels more plastic than acrylic crystal I will keep looking, thanks
Just so you know what you're looking for

 
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to honest it feels more plastic than acrylic crystal I will keep looking, thanks

Just in case of confusion. The clear front of a watch is called the crystal. It can be made of types of glass or synthetic materials like acrylic.
Acrylic is effectively a type of plastic.
 
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Just in case of confusion. The clear front of a watch is called the crystal. It can be made of types of glass or synthetic materials like acrylic.
Acrylic is effectively a type of plastic.
Thanks, certain this isn’t the original, no Omega symbol and in far too good condition considering the case!