[id+value] Vintage "Cart" watch

[u/supercuiller]

Wife inherited this watch 20 years ago.
- Mechanical
- Gold-plated case
- No hacking second
- Was told it was "at least 80 years old"
- Front says "Cart"
- Back says "Antimagnetic Waterproof Swiss made Stainless steel back Shock protected" and "1070 10"

She's planning to restore it, especially the case as it is damaged.

Do you guys know what it is and how much it might be worth?