Here is an Omega Watch from the mid-1950s.
It comes with a Cal 266 manual mechanical movement.
Refinished black dial - excellent.
Bezel tarnished.
The stainless steel case shows wear.
Crystal with minor scratches.
The leather band is worn.
For dimensions, see photos.
I purchased this watch on eBay about five years ago. It was listed as serviced by somebody in South America, but I never got any documentation to prove this. Please assume it will need service.
Timekeeping accuracy is very good after about six hours of running. I suspect a few min +/- over 24 hours.
It sets, winds, and runs.