Hello Fellow Forum Members,

How can you tell if an early Omega SMP 2531.80 has the Omega 1120 (2892) movement? Also what did the original box and papers look like? I have done a search and have not found an original picture of the factory box and papers.
Thank you in advance.

 

Mine came in a "standard" red Omega box. Unfortunately those boxes always deteriorate over time, but you don't wear the box! Full papers should include Operating Instructions pamphlet, Worldwide Service Centers Network pamphlet, Chronometer Certificate, and possibly a warranty card.

 

The 2220.80 had the 2500 coaxial A B C and D. The 2531.80 had the 1109 and 1120. Is that correct?

 

Correct on both according to the bible: https://www.fratellowatches.com/the-sleeper-watch-omega-seamaster-300m-2531-80/

 

Not sure what you are asking here. Are you asking does it have the 1120 vs the 1109 earlier version of the 2892 or are you asking vs the quartz 1538? The 1109 was used for roughly a year from 1994-95. You can’t identify it externally vs the 1120 but it is only seen in the very first tritium lume watches. The quartz 1538 can be easily spotted from the date window spacing and dial text, though some early auto watches also lack the Chronometer statement too so be careful if just going on the text.

If a 2531 ie a Bond Auto has SL lume, it has a 1120. If it has fried egg tritium lume it could have either. There actually isn’t all that much difference in the auto movements, both are 2892 derivatives. There may be a way to tell if a given watch has the 1109 from the serial. Very early auto Bonds were in the 49m or 54-55m range (serials jump about in this period). In my experience your watch has a 60m serial or higher it will have the 1120, regardless of dial lume. Confusingly the quartz serials follow a different pattern so don't assume an auto and quartz with similar serials were made at a similar time. There were several ETA 2892 versions in use by Omega in the 80s and 90s, the 1108,1109, 1111 and 1120. Indeed the later 2500 was based on the 2892, though Al will slap my wrist if I suggest they are too similar since many (the majority?) of parts have been redesigned.

 

Thank you this helps very much and answered my question.

 

That is correct. The only way to tell between a caliber 1109 or a 1120 Seamaster Professional reference 2531 would be to open the case and look at the movement (unless the watch paperwork provides that information, which don't think is the case on older SMP's

 

The early 49er serials can also have an 1111 cal. from Pre-Bond. But very rare.

 

Hi, this is the correct box and papers for 2531of tritium era, from 1993 to 1996-97.
For the latest watches delivered in that period (tritium) we can find also a full white warranty card wit reference and serial number printed.

 

That is the turn of the 1990s set and would be typical for a Pre-Bond or v early Bond. I wouldn't expect to see that in use much beyond 1994-95 or so. The flakey red boxes were in use by the mid 1990s and I have seen and owned tritium Bonds with red boxes

 

I agree with you! In the middle 90S i think the Omega dealer network handed over the watches ( both Sea and Speed) with the incoming red boxes (small white outer box and minimal user manual ) in parallel with old grey boxes.

 

And 1108 calibre. Early 2531.80 automatic non chronometer (3 liner dial) had 1108.
I am pretty sure those with 1108 had a different case number too, but I forgot what number it was.

http://www.chronocentric.com/galleries/omega_seamaster.shtml#sm_Jacques_2000

 

I have had 3 "No cosc dial" but never seen inside 1108. Always 1109.
https://omegaforums.net/threads/1109-vs-1120.70360/#post-1039507

 

That's good to know. Have all of yours been sold by Italian dealers? just curious.

Did you notice any difference between "no cosc" watches and the later "cosc-s"?
I think the SEL are different, more squared, holes for the springbars are smaller and SEL has no stamp.
Clasp seems to be different and helium cap has no logo. I do not have a good photo but I remeber the logo on the crown was smaller too.

 

I have never seen an 1008 in an SMP, but that isn't to say it is possible. The 1108 was used in the 3 hander Dynamic Gen 3. All the 11XX movements mentioned are very similar and all 2892 variants.

 

Hi, i can confirm all your details about the characteristics of "first release" of 1503/825 bracelet, both for end links and the clasp.
The profile of endlink, in addition, do not follow perfectly the case profile, is squared. See image below
No logo on helium valve
For my 3 No cosc i'm sure just for 2 of these about the italian origin.