omega seamaster mystery of the meylan movement

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I have this seamaster ck 2907 purchased many years ago the unusual think about it is that has meylan 2520 movement inside why is the question , case is super condition so is the dial not sure about the hands of the correct , any thoughts from you members I’ll appreciate , I’ll be posting many more vintage pieces as I have extensive collection , good day to everyone , kazd
 
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We are always interested in the watches of new members! We know making pictures is not easy but the thing to get them sharper is perhaps move the camera ;-)
 
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We are always interested in the watches of new members! We know making pictures is not easy but the thing to get them sharper is perhaps move the camera ;-)
Thank you I will try your advise on the pictures , but hopefully these are a ok as to see what it represents, it’s new to me posting pictures on this platform so thank you , good day, kazd
 
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Provided it has Omega and 321 on the balance cock, the most likely explanation is that someone replaced the chronograph bridge with a non-Omega part at some point in the life of the watch.
 
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Provided it has Omega and 321 on the balance cock, the most likely explanation is that someone replaced the chronograph bridge with a non-Omega part at some point in the life of the watch.
Ah thank you archer for your reply , appreciate much, yes you maybe right , but after inspecting closely I found the movement number under the balance wheel it is stamped 2520 and lemania cross stamped there too so I suspect they this may be the whole lemania movement which is identical as the 321, no doubt someone put this watch together using this movement well so I didn’t find any other seamasters with this mysterious issue , will need service as the hour subdial don’t reset correctly , thank you again for your reply maybe there is someone that can have more info on this , thank you , good day, kazd
 
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Ah thank you archer for your reply , appreciate much, yes you maybe right , but after inspecting closely I found the movement number under the balance wheel it is stamped 2520 and lemania cross stamped there too so I suspect they this may be the whole lemania movement which is identical as the 321, no doubt someone put this watch together using this movement well so I didn’t find any other seamasters with this mysterious issue , will need service as the hour subdial don’t reset correctly , thank you again for your reply maybe there is someone that can have more info on this , thank you , good day, kazd
I was hoping it was just the bridge so it could be corrected pretty easily, but no such luck.
 
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Movement has “AXJ” import code on balance bridge:

I believe that is the code for Meylan’s Lemania made movements. This is not the only example of a swapped movement in an Omega chronograph.
gatorcpa
 
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I was hoping it was just the bridge so it could be corrected pretty easily, but no such luck.
Ah unfortunately this a lemania 2520 movement lemania supplied it to omega and omega just staped their markings on , on the balance bridge there is only AXJ stamped so from what I understand that is import mark , and probably was imported by meylan and they stamped their marking , I think even just to have and wear the watch will be ok as is , this is the 321 but with different name on it , hopefully maybe someone out there knows something about this , thank again for reply , I have about 8 omegas with 321 in them one is a not so great condition but the movement is pristine so maybe I can swipe it, but the serial number won’t Mach to this reference but at least it’ll correct movement , any thoughts ?thank you ,. now I realize how much I missed this forum , good day ,kazd
 
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Movement has “AXJ” import code on balance bridge:

I believe that is the code for Meylan’s Lemania made movements. This is not the only example of a swapped movement in an Omega chronograph.
gatorcpa
Thank you much , it’ll be worth it to dig deeper into to interconnection between lemania omega and meylan , it is a gorgeous movement , just like the 321 of which I am obsessed with haha, thank you , I haven’t came across any other example of the seamaster with this movement ,
 
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I haven’t came across any other example of the seamaster with this movement ,
And you shouldn’t, but you probably will.

Omega, Tissot, Lemania and several other watch companies were corporate siblings at that time. Lemania made different versions of their chronograph movements for these companies.

Your watch simply had a movement swap with a Meylan. FWIW, probably 75% or more of the parts are compatible with the Omega cal. 321.
gatorcpa
 
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And you shouldn’t, but you probably will.

Omega, Tissot, Lemania and several other watch companies were corporate siblings at that time. Lemania made different versions of their chronograph movements for these companies.

Your watch simply had a movement swap with a Meylan. FWIW, probably 75% or more of the parts are compatible with the Omega cal. 321.
gatorcpa
Thank you for your inside , probably I’ll just leave it as is with meylan inside as I may just enjoy it not looking to sell it I don’t think , thank you , kazd