My Early Seamaster 120 Divers. What to look for and what to avoid.

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Oh it's even this outer ring which is missing, hadn't seen that. The seller doesn't know why it is missing, he didn't remove it himself, and it only went for service a couple of years back. Hmmm.. feels tricky.

possible his watch maker neglected to replace the parts
 
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watch looks correct but as mentioned above missing parts to secure the movement
And this is a 601, fitted in the seamaster 120?
 
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And this is a 601, fitted in the seamaster 120?

2 manual wind versions for this watch

NO DATE ... case ref# 135.027 ... Cal. 601
DATE WINDOW ... case ref# 136.027 ... Cal. 613
 
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2 manual wind versions for this watch

NO DATE ... case ref# 135.027 ... Cal. 601
DATE WINDOW ... case ref# 136.027 ... Cal. 613
Sorry I meant to ask - the picture that you shared, is that of an actual seamaster 120?
 
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The movement retaining ring is absolutely not easy to find. A few years ago I had one with a heavily damaged ring and several watchmakers said they couldn’t help. After scouring various sources for months I eventually called Swiss time services who thankfully had one.

Point is, you’ll likely need a full service from an Omega authorised watchmaker to get this piece.
 
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Sorry I meant to ask - the picture that you shared, is that of an actual seamaster 120?

Yes ... the 601 movement i posted is in a manual wind NO DATE case ref 135.027 OMEGA Seamaster 120

also .. added info if in case u might need it ... SS Bracelet ref# 1098 with 19MM end links ref# 547 ... is actual paired with the case range in the photo
 
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The movement retaining ring is absolutely not easy to find. A few years ago I had one with a heavily damaged ring and several watchmakers said they couldn’t help. After scouring various sources for months I eventually called Swiss time services who thankfully had one.

Point is, you’ll likely need a full service from an Omega authorised watchmaker to get this piece.
This is good info. Once again the 120 seems to be an orphan.
 
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This is good info. Once again the 120 seems to be an orphan.

I was about to say! Just when you think you've found one..
My watchmaker just confirmed the same about the difficulty for finding that ring.

For me it's a pass. Seller also has some other offers, for whom apparently it isn't an issue.
 
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I was about to say! Just when you think you've found one..
My watchmaker just confirmed the same about the difficulty for finding that ring.

For me it's a pass. Seller also has some other offers, for whom apparently it isn't an issue.
Because they didn’t bother to ask the keen eyes here 😉
These watches are fabulous but are seriously a minefield and factory support is nil with exception of the movement itself and the hands (which are white luminova now). Don’t be afraid to ask- it was wise you did. And as much as we all like a bargain, that ship has sailed on these.
I honestly think it’s harder to find a very clean all original SM120 than it is to find the same in an SM300.
 
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Ok some new insights.. @sonicosa reached out to me, thinking that the movement retaining ring is actually there. It supposedly has the same pink gold color as the movement . I had removed the photos upon request of the seller, but here it is again (after his approval). What do you think?
 
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So maybe those with "keene eyes" oughta be a little more careful next time.

But it's a sign of the times. First shoot, then ask.

Lange and Patek are out scouting for new watchmakers.

Those keene eyes should apply for the job.
 
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Good news, no need to fanatically seek fake 120's, there's an easily available kit for it now

 
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Yes ... the 601 movement i posted is in a manual wind NO DATE case ref 135.027 OMEGA Seamaster 120

also .. added info if in case u might need it ... SS Bracelet ref# 1098 with 19MM end links ref# 547 ... is actual paired with the case range in the photo

Thanks again for this info. Is there a way of finding out where ref# 1069 belonged to, i.e. do you have same picture for that bracelet? I've seen it paired with this reference a number of times, curious to know if this was an option as well.
 
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Thanks again for this info. Is there a way of finding out where ref# 1069 belonged to, i.e. do you have same picture for that bracelet? I've seen it paired with this reference a number of times, curious to know if this was an option as well.

Dunno what case ref number the bracelet on the watch belongs too. sorry ...

but i do have this ....... OPTIONS used / paired with the Seamaster 120 by OMEGA in their adverts

ref#1098 with endlinks ref#547
19mm BESTFIT SWISS TROPIC MOD DEP
and OMEGA CORAFOAM with Omega buckle
Edited:
 
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Thanks again for this info. Is there a way of finding out where ref# 1069 belonged to, i.e. do you have same picture for that bracelet? I've seen it paired with this reference a number of times, curious to know if this was an option as well.


BUT here is vintage NEWSPAPER ADVERT with this bracelet ... same bracelet currently on the watch u are looking at ?
 
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Nice restoration video that just popped up in YouTube. Calibre 563 in a 166.027... is it correct or a Frankenstein?
 
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Dear Forum, I would please need your help…
I have read all the comments on this thread and am searching for a Seamaster 120.
i have found the following and am in negotiation. Please tell me what you think !!

It has the 144 teeth on the bezel and the right font and size to my eyes. Also the case is original I think. The seconds hand is obviously not.

The owner says it has been kept in excellent condition still the bezel is almost to perfect.
What do you think? Am I missing the obvious ?
Thanks so much in advance!