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

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Ok thank you. So potentially just the sweeping hand. I will go check it out again and look for the notches and ask to see the movement.
 
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SCAMMED
Great and informative Article above! Sadly though, reading it made me realise that a few months ago I bought (from Ron of Timely Classics in Dallas Texas) a blatant FAKE 120. I have written to him about this but been flatly ignored. Oh well my fault I guess for not doing my homework ... there goes +-USD1695 down the drain - he even placed a genuine Omega movement and crystal in and on the fake case and dial - how very "clever" of him! I have reported him to NAWCC for what it is worth ... "sigh" you live and you learn ...
 
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K Kippy
SCAMMED
Great and informative Article above! Sadly though, reading it made me realise that a few months ago I bought (from Ron of Timely Classics in Dallas Texas) a blatant FAKE 120. I have written to him about this but been flatly ignored. Oh well my fault I guess for not doing my homework ... there goes +-USD1695 down the drain - he even placed a genuine Omega movement and crystal in and on the fake case and dial - how very "clever" of him! I have reported him to NAWCC for what it is worth ... "sigh" you live and you learn ...

really very sorry to hear that ....
 
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Anyone got any views on this one? Seems to be the slightly rarer 166.027 with lumed second hand.

My concern is that the lume on the dial shows signs of deterioration - but the bezel (apart from lume pip) looks in pretty good condition - that's a bit of a red flag for me (should it be?). The engraving on the case back has also been completely polished away as well. Though the engraving on these was pretty shallow in the first place. Crown seems fine and the case has the 3 & 9 notches. I understand black numerals on a white wheel is ok for this ref.

I thought I had these 120s pretty sussed out but something just seems odd with this one. Any advice would be appreciated.
Many thanks
 
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I think it's correct and largely original but the lume would put me off.

I've got one of these on its way to STS at the minute for a full refurb. I think they're lovely watches but I'd wait for better lume.
 
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second sweep hand is not appropriate for watch ........dial is in bad shape ... but also legit .... bezel seems appropriate and good condition case back is polished ..... dials do pop up now and then ...
Edited:
 
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as for the Second sweep hand .... I am not sure ... based on the link u shared ... i can only go by these VINTAGE ADVERTS .....where there other 120's with the second sweep hand mounted on the 120 in ur photos ... seems there are .... wether these were the correct second sweep hands that came with the 120's originally, I would go by the advert photos below ... now are these hands Omega ... probably .... could be replacements attached to some 120's when they were sent in for a service ...... perhaps the original second sweep hand was unavailable at the time some 120's were sent in, and these were used as a substitute .... and that is why u see some pieces with these second sweep hands .... ???? ... remember back in the day a watch maker was able to order parts from Omega directly for a watch
Edited:
 
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I've seen photos of a few Seamaster 120s with an orange seconds hand. Can anyone confirm whether these are correct or not? At first I dismissed it as an incorrect replacement but I've seen photos of at least three with this seconds hand.
 
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I've seen photos of a few Seamaster 120s with an orange seconds hand. Can anyone confirm whether these are correct or not? At first I dismissed it as an incorrect replacement but I've seen photos of at least three with this seconds hand.


these red second sweep hands were used on CHRONOSTOP and GENEVE models of the same era .... they are Omega hands ... BUT NOT ... WERE NOT ... used originally on this model 120 ...
 
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In the 1960's, with the success of the of the Seamaster 300, 3rd generation divers, the 165.024 and 166.024, Omega began their series of "baby" divers, the SM120s. Cheaper, Smaller and lighter, 37mm as opposed to the 41mm SM300, the SM120s were initially produced in 4 references. Unlike the SM300 which were only automatic, manual movements were offered as well. 31mm ladies sizes too, (I don't have any of these but be careful as some sellers neglect to mention they are selling the tiny size!!)


THE FOUR REFERENCES:
135.027 Manual Movement, No Date, Caliber 601, 611
136.027 Manual Movement, with Date, Caliber 613
165.027 Auto Movement, No Date, Caliber 552
166.027 Auto Movement, with Date, Cailber 565

Below are pics of my SM120's. Most I think are fairly nice EXCEPT THE LAST EXAMPLE WHICH IS A BOGUS KNOCKOFF AND SHOULD BE AVOIDED!

I hope this is informative and corrections and comments are always welcome.

Ref 135.027
All 4 references appear to share the same case, 5.5mm crown, hands and matte bezel. The caseback Seahorse engraving appears to be the same on all 4 references as well.


Casebacks on the 135.027 and 136.027 are flat. Seahorse is lightly engraved as shown.


All original legitimate cases have notches at the 3 and the 9. This notch may be missing on bogus examples.


136.027



165.027 For me, the hardest of the 4 to source. Dial now includes "Automatic". Note the TT location on the dial is slightly different from the 135s


Caseback is now domed to make room for the movement rotor.


166.027s



THIS IS THE BOGUS 166.027!! It's plentiful, it's cheap. This was the first SM120 I bought. My mistake cost $500 before I realized there was a difference. Other than a Caliber 565 movement taken from another Omega, it's all bad
🙁

Glossy bezel, wrong 4, different bezel font. Hands too short, Dial fonts and layout (Automatic is compressed). Black date on white background from the borrowed movement.


Caseback seamonster is incorrect. Engraving is too deep. Crown too small.



No case notch at 3 o'clock and 9 o'clock.

Hi guys, very nice thread, tnx for info.

P.S. now I will have to get one::psy::

What is realistic price for 165.027 in a good condition? Head only
 
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Just back after a couple of months at STS. It's no show stopper as it's clearly been used. However, all the lume is original, it's keeping great time and it even passed its pressure test. The matte dial and bezel look brilliant in the sun!

 
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Here is my SM120

Originally came on a 1067 bracelet dated 2/67, swapped for a tropic strap for now. I purchased with the intention of keeping the bracelet and flipping the watch but I enjoy it to much to let it go. Dial is stunning in natural light even though it is missing some lume on the dial. Bezel no longer turns, no big deal to me.

Has the "unique" lumed second hand w/ lume color matching the dial, as seen under UV.

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I've seen photos of a few Seamaster 120s with an orange seconds hand. Can anyone confirm whether these are correct or not? At first I dismissed it as an incorrect replacement but I've seen photos of at least three with this seconds hand.

Here is my SM120 Ultraman