Omega 268 restoration

Without knowing what case that is (its printed on the case back!) you're not likely to be able to find any info on it.

You're also obviously missing crown + stem, plus a crystal and crystal bezel.

IMO, this is just a 'bare movement, and you're likely to need to spend more getting a new case + dial + hands than it'll be worth in the end. I suggest seeing what you can sell it for on ebay (likely ~$100-$150 depending on how well it runs).

A replacement case is ~$200 minimum. A dial (which may or may not match the case!) is going to be ~$100 minimum. Hands (again, whether they match is in the air!) is at least $50, perhaps less if you just get generic ones. Crown + stem is ~$75 minimum. That movement DEFINITELY needs a good service on top of it.

In the end, you're probably talking about spending ~$5-$600 for something that'll be worth $250 when you're done.

Put the movement on eBay for parts. There’s not enough left to restore.