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Omega Prototype ? Double Second Seamaster

H
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Hello to the forum.

this is my first post, so my name is Dennis, I am 30 years old and have been collecting watches for 14 years. I don't have a special collection area and I collect what I like 馃榾

I found an interesting watch here that I wanted to know a little more about. I know the FH prototypes and the dials. but this watch is even more special .... who can tell me what it is?

Thank you all !
9B498742-1D0F-4563-954D-A454DDB222F0.jpeg A773C742-A328-4BDE-9661-35613641225E.jpeg 2A6CE824-2CE9-4E53-AD0D-4CA71E83C44F.jpeg FC6BC790-14A8-4886-87BF-101657BEB3A2.jpeg 56DF5316-3F3D-44F9-8840-9CDF58D5748D.jpeg 8FB0591C-66DD-4FBC-91A4-B18DD57E7EC9.jpeg 0906AA3F-EBE1-4024-BD6C-80D4BBDE3B9C.jpeg
 
Fallout Boy
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Interesting: AFAIK the 601 does not have a swan neck (reed's) regulator ....the 600 did.
 
ConElPueblo
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The marks on the subdial are similar to the ones sent for chronometer competitions much earlier.
 
H
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Thanks ! But what is it ? A Prototype like the FH鈥榮 ? And why there are two second hands ?
 
perks713
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H Horology24
Thanks ! But what is it ? A Prototype like the FH鈥榮 ? And why there are two second hands ?
I'll add another question, why aren't the two second hands in sync?
 
SkunkPrince
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Considering the location of the barrel, maybe it鈥檚 power reserve?
 
Archer
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Fallout Boy Fallout Boy
Interesting: AFAIK the 601 does not have a swan neck (reed's) regulator ....the 600 did.

Correct - this is what a 601 should look like:



What the OP has is a 601 that has had the entire balance cock and balance assembly from a 55X/56X/75X series movement fitted to it. You can tell by how the balance cock is machined away for clearing the rotor at the perimeter (red arrow):



So this part is not original to any 600 series movement, as they are not machined for this clearance.

Regarding the sub-seconds hand, it is located where the fourth wheel is, which is where a sub-seconds movement would have the seconds hand attached typically. We've seen similar things on the 30T2 watches, where someone has installed the fourth wheel for a sub-seconds variant in a central seconds movement, allowing both seconds hands to exist at the same time.

Off the top of my head, I'm not aware of a variant of the 550 based watches (which the 600 series is part of) that has a sub-seconds at 6. Someone has likely found a wheel that works, or has gone to the trouble to add a post on the fourth wheel.

Is it a prototype? Well, I personally always take the P-word with a grain of salt, but others can talk about that aspect if it better than I can, as I'm just a watchmaker so that sort of thing is not in my wheelhouse.

Cheers, Al
 
H
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Thanks for your opinions and also the link to the threads.

The watch comes from an old man, having some watches but wasn鈥檛 a collector. His house is located in Switzerland near the omega Headquarter. He does not remember where it comes from but who knows 馃榾

maybe I can ask omega directly ?
 
cristos71
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The double case ref is for either a 564 SM chronometer or a 563 SM.

I don't see any lume on the ' t Swiss Made t ' dial.
 
dsio
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ConElPueblo ConElPueblo
Have a look at this thread:

https://omegaforums.net/threads/ver...dp-observatory-chronometer-on-the-bay.133741/
That鈥檚 what kind of jumped out at me too, if someone wanted so put a 600 series variant through the same chronometer testing the 30T2 watches went through adding the sub seconds at 6 may have been necessary. It could also just be some franken but I鈥檇 actually be keen to see what an extract says on that serial
 
ConElPueblo
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cristos71 cristos71
The double case ref is for either a 564 SM chronometer or a 563 SM.

I don't see any lume on the ' t Swiss Made t ' dial.

I think the dial is a fairly generic item not ment for production.
 
mac_omega
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H Horology24
Thanks for your opinions and also the link to the threads.

The watch comes from an old man, having some watches but wasn鈥檛 a collector. His house is located in Switzerland near the omega Headquarter. He does not remember where it comes from but who knows 馃榾

maybe I can ask omega directly ?

Sorry, but I seriously doubt this story... I know where the watch was sold and by whom...
 
H
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mac_omega mac_omega
Entschuldigung, aber ich bezweifle diese Geschichte ernsthaft... Ich wei脽, wo und von wem die Uhr verkauft wurde...


you can think what you like, but the watch was not purchased from me anywhere else. but you are welcome to tell me what exactly you mean by that.
 
Tony C.
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Whatever it is, I don't see how it could be prototype, as that would imply a design that would have been considered for regular production.
 
padders
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Auto dial and manual movement. T marks dial and no lume. Auto balance and manual movement.

Well it might be some kind of prototype but it might also be an out and out Franken. If the former, you need some kind of decent bona fides or else it don't mean spit IMO.
 
watchyouwant
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Not the first one I've seen. Some bored watch guy, who wanted to have fun and mix-matched parts ? There is a word for that....
 
watchyouwant
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padders padders
Auto dial and manual movement. T marks dial and no lume. Auto balance and manual movement.

Well it might be some kind of prototype but it might also be an out and out Franken. If the former, you need some kind of decent bona fides or else it don't mean spit IMO.

Some more: unprofessional drilled hole into an inner Mu metal cover. for no obvious reason where it was drilled. Maybe even a Mu metal inner cage ? Case back steel pitting inside? What else?
 
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