Trying to find information about my omega watch. Anyone can help ?

Hello, I’m new to omega watches.
A few days ago I found an old watch that belonged to my grandfather. Not with the box or the letter.
and now I’m curious about the model, and I want to know if it’s original or not, because when searching on the internet I see that all omega watches have a serial number on the back, but not this one.
is there someone who can help me?


Omega watch back.webp

Omega watch front.webp
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Love or hate this patina?

What do you think about this patina?
Sometimes I think it’s like a piece of art and so unique. At first I was thinking that it’s sucks that the patina is not even but looking again I like it more and more.

Also if someone knows how these type of patina develope please let me know. One interesting explanation that I got from one old (82) watch collector is that this happens because the owner was smoking those wooden tobacco pipes.


Screenshot_20241121_193819_Auctionet.webp


Screenshot_20241121_193849_Auctionet.webp

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Omega Speedmaster Date 3513.50 cal 1152, anyone know where to find parts number schema/list?

Hey all, this is my first post here as I recently acquired this watch and wanted to open it up to inspect the movement. Now I’d like to change the case back gasket, but did tons of searching and nothing conclusive comes up for the usual keywords. The only website I found that pops up for 175.0084 is https://www.ofrei.com/page990.html with OME-G281-272. However, I’ve seen part numbers like 198ZW5031, 198ZW5029 or 198-0080. I’m assuming there’s a more popular ref that’s the same as…

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Seeking thoughts on what is believed to be a Speedmaster 105.002-62A

I am helping my father figure out what he has and what to do with the Speedmaster he was gifted when he received his first degree in 1963. The current plan is to take it to an Omega Boutique to have the bracelet re-attached. I am not sure if it works, as I didn’t want to wind it after so many years sitting in a jewelry box (in a zip lock bag…) and risk breaking something. He has/had no idea of what he owned. I told him to at least get a watch case for it. I am not sure what to advise my…

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