I own this watch and I would like to have some opinions on its authenticity.
The case back has 166.001 as a reference number but it lacks the famous seamaster logo, is it possible?
It's a caliber 562 and the serial number is between 21 and 22 millions.
It's my first vintage watch and I bought it off ebay from a guy in Germany.
What I know from the seller is that the buckle is aftermarket.

 

What logo is missing?

 

The hippocampus on the case back.

 

It's authentic.

Yes.

 

Thank you very much!

From the serial number I found that it could be dated 1964 (± 2 years).
Is there any way to get a more accurate date:
like intersecting serial number, reference number and caliber?
I asked an omega local store if they could give me any information if I gave them the serial number, but they couldn't help.

 

You could order and extract from the archives from omega, but not sure its worth it in this case ( not sure what you paid for the watch, but guess it could be a significant % of the watches cost)

Personally not sure that the buckle is aftermarket, but other experts will chime in here to confirm

 

https://www.omegawatches.com/customer-service/extract-of-the-archives

 

Ps i have extracts either side of your serial number

18.2 mln dating to jan 1962 production and
24.5 mln dating to march 1966 production

So suggest a late 1963/ early 1964 date for your watch is going to be pretty accurate

 

Wow, didn't know about that service!

@Sherbie Yeah it's a significant % of the watch cost, but I'd like to dig into it.
I think I will opt for an extract in the future...

Regarding the buckle I've seen a similar one in another post and some said it could be fake,
but not sure still.