Help: Vintage DeVille

Hello all, what a resource this forum is. I fell down the rabbit hole yesterday and went through several rounds.

I have a vintage Deville, no idea what period, it was my fathers so I guess late 60s early 70s. I'd like to get a bit more information, the background;
- It doesn't run (I tried)
-the lens is scratched to all heck (he worked on cars, and if I'm anything like him he probably never took it off before starting in).
-its d-i-r-t-eee, some patina in there too best I can tell.

So my questions are;
-what year, model-submodel is it?
-approximate value as is?
- what would it need in terms of service/restoration to bring it up to snuff
-what would that cost, ballpark?
-What would it be generally worth after all that? i.e. is it better to sell it as is.

I'm not partial to the watch, never remember him wearing it, I have a Rado that he did wear or I remember him wearing that means more to me. So I'm considering turning this into a Seamaster Diver 300M (preowned) or possibly Seiko SJE101 (new). And was really looking for good insight as to whether it was worth fixing/cleaning/servicing or should I jsut move it as is.

That's what I figured, is there gold value in the movement as well or should disassemble and take the parts in for scrap? I've never parted out a watch so completely ignorant on the best approach.

redpcar, was in no way expecting a 1:1, if it paid the sales tax I'd be happy. It weights in at 76grams, so minus ~18grams for movement (found that in another thread here), it should net ~$2900 USD in scrap. Assuming I can get near the $50.7 per gram price.

Thank you all for the replies.

Current check shows about $3500 for value. Not sure if white gold gets a higher value. You pay more when you buy vs. yellow gold

You can sell for scrap. Take your chances on Ebay and hope someone bids higher, but all gold strap watches like that have a minimum market as they're sized for a certain wrist diameter. You can remove, but can't really add.

I would go the scrap route. If they don't want the movement. Take that and sell it