Well the vintage Omegas are also more valuable if they have certain in-house chronometer movements like the 561, 564, and 751.... 35x bumper autos vary in price...it's a buyer's market in the vintage watch arena...I just picked up a Girard Perraguex HF (high frequency) chronometer 39 (functional) jewels, 36,000 vph in-house movement in great condition (being shipped to me right now hopefully lol...paid today) for....wait for it.
Under $200.
Now, it'll probably need a servicing but that's a small price to pay...
I've forwarded the link for the Omega to noted expert Desmond Guilfoyle (whose articles on vintage Constellations are amazing...to say the least...and can be found in my review of my vintage Omega) for review...I'll keep the forum posted.