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1950s 18k gold Omega please help

Wizzar
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do anyone knows what is the reference? I belive (it was told to me like this) case is 18k gold, indexes and logo looks like gold too, but hands are kind of grey? Is it possible for gold to behave like this or hands are plated? What do you think of watch, non signed crown is it possible to be original without omega logo?
For me it looks like an interesting model, but I cannot find more informations about it, dont know why. Maybe one of you can say something more, we have a lot of great experts here
Edited:
 
Dan S
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If I had to guess, I'd say it's probably a nationally cased example. If you think it's 18k gold, you must have more photos showing hallmarks, etc. Why not post them?
 
Wizzar
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Dan S Dan S
If I had to guess, I'd say it's probably a nationally cased example. If you think it's 18k gold, you must have more photos showing hallmarks, etc. Why not post them?

I saw it live and I know the guy who’s selling it and no doubts it’s 18k, no marks outside case, they are inside. Unfortunately no other photos for now. I’m wondering do anyone else also find it interesting or potentially could say somethings more as I can’t find more information about it
 
qazwsx1
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I believe that it looks identical to my watch.

The reference number is 2640, with a caliber of 283.

Here is a shot of it on my wrist:
IMG_3345.webp
 
Wizzar
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qazwsx1 qazwsx1
I believe that it looks identical to my watch.

The reference number is 2640, with a caliber of 283.

Here is a shot of it on my wrist:
IMG_3345.webp

Is it 18k Gold? Was the dial renewed? It is very clean and somewhere on a dial o can see leftovers of dirt etc, also Swiss made text looks too much moved to the left or maybe it’s a perspective
 
felsby
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Wizzar Wizzar
Is it 18k Gold? Was the dial renewed? It is very clean and somewhere on a dial o can see leftovers of dirt etc, also Swiss made text looks too much moved to the left or maybe it’s a perspective
The leftovers is patina. Swiss made is legit, it's parallax that makes it seem off-axis.
Hallmarks are never stamped inside the case - they are there for customs inspection, and these folks don't open watches. Look at the inner faces of the lugs.
 
padders
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felsby felsby
The leftovers is patina. Swiss made is legit, it's parallax that makes it seem off-axis.
Hallmarks are never stamped inside the case - they are there for customs inspection, and these folks don't open watches. Look at the inner faces of the lugs.

Not always true. Solid gold watches sold in the UK market may have external marks but always have a full assay office hallmark on the inner caseback. It may be a Swiss mark if the watch is post the convention of mutual acceptance or it may be a UK mark. Usually the latter.

9k and 14k gold can generate considerable patina over time. The hands and case on the OP watch could well be solid gold despite there being no apparent external marks. Or the hands and dial furniture could just be plated.
Edited:
 
gatorcpa
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1. It is possible that hands are gold plated or were replaced. We cannot tell from the picture.

2. Crown should be signed. Probably a replacement.

3. If no Swiss hallmarks on back of lugs or on side of mid-case, then either a National Production case (non-Swiss), or gold plated case. Again, there is no way to know this without pictures.

4. I don’t think the case reference is the same as the @qazwsx1 example above. The lugs have a different shape, are straight and not angled. However, it is possible that the same dial was used for multiple cases.

On this watch, there are more questions than answers. So unless it’s very inexpensive, it would be a pass for me.
gatorcpa
 
felsby
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gatorcpa gatorcpa
4. I don’t think the case reference is the same as the @qazwsx1 example above. The lugs have a different shape, are straight and not angled. However, it is possible that the same dial was used for multiple cases.
To me, the lugs appear identical based on the two photos.
 
qazwsx1
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Regarding the correct and original crown, I think it should be the signed crown, as shown in this example.
The image was sourced from the internet.
IMG_7662.webp IMG_7663.webp
 
Dan S
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felsby felsby
To me, the lugs appear identical based on the two photos.
Not the same for me. The tops of the OP lugs are facing up, ref 2640/2639 lugs are angled outwards. I have had several 2640s, and I don't think the OP watch is a 2640.

Maybe the OP can provide more information (e.g. the case diameter) and more photos from various angles.
 
Wizzar
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Today I will be able to take a few more photos of the watch so I'll be happy to upload them here.
Thank you for all opinions and interesting thoughts, I'm wondering what happened to the hands most and also if it is possible that omega logo rubbed off from crown during the years, its manual winding watch, so theoretically maybe, idk. Shape of the crown is not similar to any of Omega crowns from this period I know, but the color matches.
 
drpaul
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I don’t think the logo got rubbed off. That will take some iron hands to do that. And even then the grooves should go off before the logo. It would be a non oem replacement as suggested.
 
Wizzar
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drpaul drpaul
I don’t think the logo got rubbed off. That will take some iron hands to do that. And even then the grooves should go off before the logo. It would be a non oem replacement as suggested.
Yes, that's also what I think, but I was just curious if it is even possible. Because sometimes I saw kind of rubbed off edges, not to mention any kind of plating etc. But covering is another story I think
 
Wizzar
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Here's one on ebay, I think the same as I showed, with original crown (not sure if from this model exactly, but at least with logo), way more polished but I belive case is the same, the dial also.

https://www.ebay.com/itm/226539963356
 
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qazwsx1
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So, is this your watch at the moment?

If so, why don’t you send more pictures of the movement as well as the inside of the case back?

Or at least provide more pictures of the crown and the outside of the case back.
 
Wizzar
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qazwsx1 qazwsx1
So, is this your watch at the moment?

If so, why don’t you send more pictures of the movement as well as the inside of the case back?

Or at least provide more pictures of the crown and the outside of the case back.
Im not at home at the moment, today I will post more photos 😀
 
gatorcpa
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Wizzar Wizzar
Here's one on ebay, I think the same as I showed, with original crown (not sure if from this model exactly, but at least with logo), way more polished but I belive case is the same, the dial also.

https://www.ebay.com/itm/226539963356
I think you are correct on this one. Here is a picture of the inside back of the eBay watch:

1740486329160.webp

I cannot tell the origin of the case, but it is not Swiss. Japanese maybe, given where it is now?

Dial and hands seem to match yours.
gatorcpa
 
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Wizzar
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gatorcpa gatorcpa
I think you are correct on this one. Here is a picture of the inside back of the eBay watch:

1740486329160.webp

I cannot tell the origin of the case, but it is not Swiss. Japanese maybe, given where it is now?

Dial and hands seem to match yours.
gatorcpa
Now it is in Japan where I am also. So if it was not imported, then you might be right. So is it possible that the watch was not made in switzerland? Or how do you know it is not swiss?
 
gatorcpa
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The movement was made by Omega in Switzerland. The gold case was not. It was made by a local contractor under license by Omega. This was frequently done to save on customs.
Wizzar Wizzar
Or how do you know it is not swiss?
There are no Swiss hallmarks or “Swiss Made” on the case as would be required by Swiss law.

Hope this helps,
gatorcpa
 
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