No, not really. In many markets when these go to Omega for servicing, the entire movement is swapped out with another one that has already been refurbished, and your movement goes to a central location to be serviced, and then sent back out to be put into another watch.
There is no serial number on the movement, so it depends on the history of the watch if the movement has ever been swapped or not.
Thank you Archer, actually I'm not talking about a serial number of the caliber but just the model, 1140 (1988), 1141 (1996), 1143 (1996) or 3220 (2000)... I've seen around some watches for sale with a 1143 and they were manufactured before 1996, do you think it's because of the swapping refurbishment you're talking about?
Yes, I understand what you are referring to. I really doubt that Omega is making sure they replace like for like when it comes to the era of the movement, that is my point...
I don't know where you are getting the dates for those movement changes, but again there's no way to tell the movement type by the watch serial number with these.
