someone is selling this watch as part of an estate sale. They are asking 1500$ since the watch needs a service. Question is, did this model come with 633 end links?
yes? https://issuu.com/mstanga/docs/tab_bracciali_omega_ultima.xls what model is it? if between '70 and about '86, there's a good chance it did, or may have.
Unlucky, but if you found that for sale for 1500 US, you shouldn't have wasted time questioning the end links. At a higher price, then yes due diligence is great. At that price, you've got to be prepared to trust yourself and/or accept relatively small issues.
The listing for that watch immediately raised red flags for me. The price was listed to low for the market, the seller only has a picture of himself with his face cut off and the only post on his timeline are from 2010. I hope someone really got a good deal, but it seemed to good to be true for me.