I purchased this approx 15 years back from an old dentist as I am an Antique dealer of approx 30 years. . the watch comes with the Omega Guarantee of Origin which has a 1956 date . Its As Found and works. the "Waterproof " stamp on the back is very faint and I do not feel comfortable trying to open the watch to view the movement . I would like to know if anyone is familiar with this exact model and can give me pointers on how to authenticate it. I believe its right but would like input from someone with more knowledge than myself. Also an approximation on value.

 

Looks ok other than the replacement crown.

If you could safely open up the case and take photos of the movement and inside of the case back, all else will be revealed.

 

Do you know if this is a front entry watch from simply viewing my pics? Also is there any fear in regards to compromising the seal as its Waterproof ?

 

No, the case back will come off. However, you will likely need an appropriate tool, and someone experienced to use it if it is a "snap-back", as opposed to a "screw-back".

 

Regarding value, I couldn't say (I'm not being awkward, I simply don't know) but you seem to have the identical model to mine, which is case ref. 2767-5 SC with a 354 "bumper" movement. The serial number on mine begins with 147 so pretty close to yours. The S in Seamaster is slightly different on yours but dials were contracted out to various makers, and I think that's just a variant and not a problem.

 

Thank You - I figured the watch was right but you hear some much about fakes - it started to creep into my psyche . I looked at a page regarding Fakes and most of them are very obvious but not all, so I wanted to see what others like yourself thought. I appreciate the photo as well.

 

The main problem with Omegas is not fakes - not too many of those at this lower end - but "frankens", ie watches made from parts of different models. You also have to consider redials, wrong crowns, wrong hands and overpolishing. That maybe doesn't sound like too many things to take into account, but it all takes a long time to learn.

 

Understood , way above my limited knowledge . The only issue on this watch to me was the crown , which someone said was a replacement. I am curious , if you could look at the guarantee of origin paper , can I use these numbers to help identify the movement or anything else ?

 

Waterproof ~60 years ago, probably not now.
If it hasn't had regular service, seals would not be reliable any more, you're safe to open it as there is nothing to compromise.

 

Thank You very much ! Just curious if you think I could remove the back by using a strong razor blade to lift it off and do they snap back on easily or is a compression tool required to do this ?

 

Heras some good info from @Archer on how to remove snap on case back: https://omegaforums.net/threads/watch-case-opener.57612/#post-713071

Iv'e been able to push mine back in using my fingers.

 

Thank You - your help is much appreciated !

 

I finally opened the back and its also a 354 bumper type movement. I appreciate your help.