Need comments; My seamaster chronometre with triple case references

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Hello, all omegaforum’s members.
I want to share another one in my collection.

It is seamaster with uncommon larger size than usual (36.5mm excluding crown) with chronometer officially certified in the triple case reference (2657, 2494, 2521-10SC).

In my opinion:
- Gold cap case is OK (with some polished)
- Chronometer-rated, bumper automatic movement with caliber 354 (17 jewels) is original , dating around 1955 (serial number 14,919,xxx). This movement is correct and clean.
- Dial with applied omega logo plus crosshair is original and uncommon
- Elongated rhombus hour-markers are quite attractive (double rhombus at 3/6/9/12 o’clock)
- Naiad crown is original, which I believe, it is correct time-period with this watch.
- Dome crystal with omega-signed is original too.



In the beginning, I searched in old topic which I created in the past and many omegaforum’s members posted nice examples, I found many of seamaster with chronometer officially certified over there.
(https://omegaforums.net/threads/my-...tre-officially-certified.112122/#post-1482023)

While I focused only seamaster with ‘applied omega logo’ (with same font’s style of “seamaster” word), I found only this example.
For the first time, I concerned about my watch because this example used “slant leg of M” in AUTO"M”ATIC instead of “straight leg” like mine.


Nonetheless, when I search in a model without seamaster word, I found this two examples using the same font with me (straight leg). I compare three of them, mine was the leftmost one.

Finally, when I compared with my old seamaster, I found that it was the same hour-markers and same font’s style (straight leg of M). The difference between both of these is "applied omega logo" and "crosshair" added in my new watch (pics attached below). So I believe that my old seamaster was legit too.


My wrist shot:


Thanks for your kindness comment about my watch.
I really want to thank you for your help from omegaforum’s members that I talked and he gave his useful opinion via pm.

Teerapat
 
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I think your 2494 is the first triple reference 2494/2657/2521 I've ever seen. Double reference 2494/2657 is common, but 2521 is more commonly seen as a single reference.

Interestingly enough, 2520 is often double referenced with 2577.

Congrats on scoring a 2494 chronometer with uncommon dial script! My CO 2494 chronometer . . .



. . . waves hello.

Best,

Art
 
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- Dome crystal with omega-signed is original too.
I don't believe so. I have a KO 2627 that had a much different crystal with a different Ω and a much different profile. Yours looks like the modern profile I was forced to replace it with because it was weak and broke as the watchmaker was removing it (we swapped cases).
 
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That’s a really nice size 36.5mm, very modern and looks great on the wrist with a really attractive dial and elegant yet simple Seamaster case design. Very cool watch mate.
 
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Beautiful watch. A lot of similarities between yours and mine (from my father bought in 1954) including the same three references. The biggest difference being that mine is stainless.

 
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Thanks @Mark020
Wow!!
Very nice example @GWahoo .

Another difference is hour-markers, all of my markers were "elongated rhombus".

Kind regards,
Teerapat