Hello, This watch was given bought by my grandfather which was given to my father which was given to me. I am presuming this is likely before the 1970s. I believe the serial number is worn off. The watch itself is in poor condition and we are looking at remastering it. Any help is appreciated, Thanks
The serial is on the movement. Have a watchmaker open it, take photos of the movement and inside the case back, then post them here.
Your watch is in poor condition and the cost to restore it will far outweigh its value. However, being a family piece, the best thing to do is find an independent watchmaker and have the case cleaned, the movement serviced and the crystal/crown (and stem?) attended to. To identify it, follow this guide. https://omegaforums.net/threads/how-do-i-identify-my-vintage-omega-watch.93146/
The caliber 600 is a very rugged and reliable manual wind movement. It's probably the most accurate in my Omega collection.