I'm no expert, but I'm going to pretend to be one for a minute.
15 million range puts it around 1956 per
http://chronomaddox.com/omega_serial_numbers.html
"Omega Automatic" , 2 adjustments.. This is good and bad. Bad because this was probably an entry level (or close to) watch... Good because if you're going to make a fake wouldn't you make a fake expensive one? Everything from your pics looks legit to me, but I don't know exactly what to look for.
Note the case "Star Watch Case Co" . I have a 1950 Longines that also has a case made by someone other than Longines.. from what I found in that era there was a heavy tax on imported watches, so in order to be competitive (remember there was still a quality American watch industry in the 50's) the Swiss would ship the movements to the US, where they would be put into cases by a US distributor. This minimized the tax.
It also means the case does not have a serial # that matches the movement. It's an official factory sponsored "frankenwatch" as some people like to call them.
Since it was not cased by Omega originally, there's no matching "reference" #, but here's a watch that used the same caliber from the right era... looks like that caliber was also used in the Seamaster, but this is clearly not a Seamaster.
https://www.omegawatches.com/planet...ache=1&cHash=37ee919fa41e503905b604c339ee7092
Your case is a reasonable facsimile of that one...
So all in all, no, you didn't get any sort of holy grail watch, but I think you got a legitimate 1950's Omega for $50. Get her a tune-up and a nice leather strap and enjoy!
Click to expand...