This thread might have some useful info: https://omegaforums.net/threads/cal-750-info-worth-restoring.84774/
Looks OK
70s /80s Quartz probably. All info is inside the case back of watch. ( Needs removal to get model# and serial # also to see if Quartz or mechanical (if it works with a wind or a bit of movement it’s probably mechanical) …..Ask a watchmaker to remove caseback)
Not in the best shape, or very collectable so value is sentimental mostly.
Gold platted which is worn in places.
Nice leather strap and a clean up and service will have you a watch for the next 5-7 years that will do you well.
As linked above it’s a Ref 166.0141 with Cal 750. I call them barcode dial Day-Dates and they’re part of the international collection but use recycled Geneve cases.
I’ve got a partially written article on these that’ll be up soon but here are some of the variants.