Universal Geneve Thin Square Watch

I'd like to repair my father's old Universal Geneve watch. Can someone shed some light on it such as vintage or model name? Is it a decent watch? I don't mind spending a couple hundred dollars to fix it if it's worth that much but don't see spending that if it's basically a Timex. And yes, that awful band has to go.

I remember him wearing it in the 70s but at some point it stopped working. It winds, runs for a few minutes, and stops.

Can someone recommend a good place to send it for repair?

@Larry S I found the following comp, is it a composite of parts?

https://www.chrono24.com/watch/DHLFV3

New pickup . Absolutely smitten.